Amazon Revenue Calculator Us

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Amazon Revenue Calculator US

Estimate your potential sales, profit margins, and fees for products sold on Amazon in the United States.

Calculate Your Amazon Sales & Profit

The price a customer pays for your product.
Your direct cost to acquire or manufacture the product.
}
The amount the customer pays for shipping (if applicable).
}
Fulfillment by Amazon (FBA) Fulfillment by Merchant (FBM) Choose FBA for Amazon-handled logistics or FBM for self-fulfillment.
Average monthly storage cost per unit (varies by size/weight).
Fee for Amazon picking, packing, and handling.
Amazon's commission on the sale (typically 8-15%).
e.g., Transaction fees, packaging, inserts.
Total units sold in the period.

Your Estimated Results

Total Revenue:
Total Cost of Goods Sold:
Total Amazon Fees:
Estimated Profit:
Profit Margin:

Key Assumptions

Fulfillment:
Referral Fee Rate:
Formula Overview: Total Revenue = (Product Selling Price + Customer Shipping) * Units Sold. Total Variable Costs = (Product Cost + Fulfillment Fees + Referral Fees + Other Variable Costs) * Units Sold. Estimated Profit = Total Revenue – Total Cost of Goods Sold – Total Amazon Fees – Other Variable Costs. Profit Margin = (Estimated Profit / Total Revenue) * 100%. FBA fees and FBM shipping costs are factored into the Total Amazon Fees or Total Variable Costs depending on the fulfillment method.

Revenue & Cost Breakdown (per unit)

Visualizing the distribution of revenue per unit sold.

Cost Breakdown Per Unit
Cost Component Amount (USD) Percentage of Selling Price
Product Cost
Fulfillment Fees (FBA/FBM)
Amazon Referral Fee
Other Variable Costs
Total Costs Per Unit
Estimated Profit Per Unit

What is an Amazon Revenue Calculator US?

An Amazon Revenue Calculator US is a vital online tool designed specifically for sellers operating within the United States marketplace. It allows you to meticulously estimate the potential revenue, associated costs, and ultimately, the profit generated from selling products on Amazon.com. This calculator helps bridge the gap between your product's selling price and the actual amount of money that lands in your bank account after accounting for all Amazon-related fees and your own operational expenses.

Understanding your potential profitability is crucial for making informed business decisions. This tool is invaluable for a wide range of Amazon sellers, including those utilizing:

  • Fulfillment by Amazon (FBA): Where Amazon handles storage, packing, shipping, and customer service.
  • Fulfillment by Merchant (FBM): Where sellers manage their own inventory, shipping, and customer service.

Common misconceptions about Amazon selling often revolve around underestimating the complexity and cost of fees. Sellers might assume their profit is simply the selling price minus their product cost. However, an Amazon Revenue Calculator US highlights that Amazon levies various fees (referral fees, fulfillment fees, storage fees) and that other variable costs (transaction fees, packaging) also significantly impact the bottom line. It provides a realistic financial snapshot, moving beyond simple guesswork.

Amazon Revenue Calculator US Formula and Mathematical Explanation

The Amazon Revenue Calculator US breaks down the profitability of a product by systematically calculating income and expenses. The core logic involves summing up all revenue streams and subtracting all associated costs.

Core Calculations:

  1. Total Revenue: This is the total amount of money received from customers. It includes the selling price of the product and any shipping charges the customer pays.
    Total Revenue = (Product Selling Price + Customer Shipping Cost) * Units Sold
  2. Total Cost of Goods Sold (COGS): This represents the direct costs incurred to produce or acquire the product itself.
    Total COGS = Product Cost of Goods Sold * Units Sold
  3. Total Amazon Fees: These are fees charged by Amazon for various services. The specific fees depend heavily on the fulfillment method (FBA vs. FBM) and product category.
    Total Amazon Fees = (FBA Fulfillment Fee + FBA Storage Fee + Amazon Referral Fee) * Units Sold
    *(Note: For FBM, the "Fulfillment Fee" is typically represented by the actual shipping cost you incur, which is often passed to the customer but can also be a cost if you subsidize it. This calculator simplifies by including FBM shipping cost under 'Other Variable Costs' if FBM is selected, and assumes the 'Customer Shipping Cost' input reflects what the customer pays for FBM shipping).*
  4. Total Other Variable Costs: These are additional costs per unit that are not direct COGS or Amazon's primary fees.
    Total Other Variable Costs = Other Variable Costs per Unit * Units Sold
  5. Total Costs: The sum of all expenses.
    Total Costs = Total COGS + Total Amazon Fees + Total Other Variable Costs
  6. Estimated Profit: The final amount remaining after all revenues and costs are accounted for.
    Estimated Profit = Total Revenue - Total Costs
  7. Profit Margin: The profitability expressed as a percentage of revenue.
    Profit Margin = (Estimated Profit / Total Revenue) * 100%

Variable Explanations:

Amazon Revenue Calculator Variables
Variable Meaning Unit Typical Range / Notes
Product Selling Price The price at which you offer your product for sale on Amazon.com. USD Varies greatly by product.
Product Cost of Goods Sold (COGS) The direct cost to manufacture or purchase one unit of your product. USD Should be lower than Selling Price.
Customer Shipping Cost The amount charged to the customer for shipping. (For FBM, this is what you charge; for FBA, it's what Amazon charges the customer). USD Often set to cover actual shipping expenses or as a selling point.
Fulfillment Method How the order is fulfilled (FBA or FBM). Categorical FBA: Amazon handles logistics. FBM: Seller handles logistics.
FBA Monthly Storage Fee Monthly fee charged by Amazon per cubic foot for storing inventory in their fulfillment centers. (This calculator uses a per-unit estimate). USD Depends on size, weight, and time of year. e.g., $0.60 – $3.00+ per unit/month.
FBA Pick & Pack Fee Fee charged by Amazon for picking items from inventory, packing them, and preparing them for shipment to the customer. USD Depends on product size and weight. e.g., $2.50 – $10.00+.
Amazon Referral Fee (%) Amazon's commission on the total sale price (including shipping). This percentage varies by product category. % Typically 8% to 15% for most categories. Some specific categories may differ.
Other Variable Costs Additional costs incurred per unit, such as payment processing fees (beyond referral), specialized packaging, inserts, return processing costs. USD Varies by product and operational efficiency. e.g., $0.10 – $2.00+.
Units Sold The total number of units expected to be sold within the calculation period. Count e.g., 10, 50, 100, 1000.

Practical Examples (Real-World Use Cases)

Let's explore how the Amazon Revenue Calculator US can be used with realistic scenarios.

Example 1: FBA Seller – Mid-Size Product

Sarah sells handmade ceramic mugs on Amazon using FBA. She wants to estimate profitability for a new batch of mugs.

  • Product Selling Price: $24.99
  • Product Cost of Goods Sold: $8.00 (materials + labor)
  • Customer Shipping Cost: $0 (Included in selling price, as FBA Prime members get free shipping)
  • Fulfillment Method: FBA
  • FBA Monthly Storage Fee: $0.75 per unit
  • FBA Pick & Pack Fee: $3.80 per unit
  • Amazon Referral Fee (%): 15% (Home & Kitchen category)
  • Other Variable Costs: $0.40 (Bubble wrap, box, thank you card)
  • Units Sold: 150

Calculation using the tool:

  • Total Revenue: ($24.99 + $0) * 150 = $3,748.50
  • Total COGS: $8.00 * 150 = $1,200.00
  • Total Amazon Fees: ($0.75 + $3.80 + (0.15 * $24.99)) * 150 = ($0.75 + $3.80 + $3.75) * 150 = $8.30 * 150 = $1,245.00
  • Total Other Variable Costs: $0.40 * 150 = $60.00
  • Total Costs: $1,200.00 + $1,245.00 + $60.00 = $2,505.00
  • Estimated Profit: $3,748.50 – $2,505.00 = $1,243.50
  • Profit Margin: ($1,243.50 / $3,748.50) * 100% = 33.17%

Interpretation: Sarah can expect to make approximately $1,243.50 in profit from selling 150 mugs, achieving a healthy profit margin of 33.17%. This indicates the product is likely profitable under these conditions.

Example 2: FBM Seller – Lower Priced Item

John sells phone accessories via FBM. He needs to calculate profit for a charging cable set.

  • Product Selling Price: $12.95
  • Product Cost of Goods Sold: $3.50
  • Customer Shipping Cost: $3.99 (What John charges the customer)
  • Fulfillment Method: FBM
  • Amazon Referral Fee (%): 15%
  • Other Variable Costs: $1.20 (Includes actual shipping cost of $3.50 which is partially covered by customer shipping, plus polymailer, tape)
  • Units Sold: 200

Calculation using the tool:

  • Total Revenue: ($12.95 + $3.99) * 200 = $16.94 * 200 = $3,388.00
  • Total COGS: $3.50 * 200 = $700.00
  • Total Amazon Fees: (0.15 * $12.95) * 200 = $1.94 * 200 = $388.00 (Referral fee only, as FBM has no pick/pack/storage fees)
  • Total Other Variable Costs: $1.20 * 200 = $240.00 (This includes the net shipping cost after customer payment)
  • Total Costs: $700.00 + $388.00 + $240.00 = $1,328.00
  • Estimated Profit: $3,388.00 – $1,328.00 = $2,060.00
  • Profit Margin: ($2,060.00 / $3,388.00) * 100% = 60.80%

Interpretation: John expects a profit of $2,060.00 from selling 200 cable sets, with a profit margin of 60.80%. It's important to note that the 'Other Variable Costs' for FBM often absorbs the actual shipping expense minus what the customer paid. A higher profit margin for FBM is common, but it requires more logistical effort from the seller.

How to Use This Amazon Revenue Calculator US

Using the Amazon Revenue Calculator US is straightforward. Follow these steps to get accurate profit estimations for your products:

  1. Enter Product Selling Price: Input the exact price you intend to sell your product for on Amazon.com.
  2. Input Product Cost of Goods Sold (COGS): Enter the direct cost to produce or acquire one unit of your product.
  3. Specify Customer Shipping Cost: Enter the amount the customer pays for shipping. For FBA, this is often $0 for Prime members. For FBM, it's what you charge.
  4. Select Fulfillment Method: Choose 'Fulfillment by Amazon (FBA)' or 'Fulfillment by Merchant (FBM)' from the dropdown. This selection dynamically adjusts the fees considered.
  5. Enter FBA Fees (if FBA selected): If you chose FBA, input the estimated monthly storage fee per unit and the pick & pack fee per unit. You can find these in your Amazon Seller Central account under "Fulfillment by Amazon" > "Storage Fees" and "Fee Schedule."
  6. Input Amazon Referral Fee (%): Enter the referral fee percentage applicable to your product category. This is crucial as it varies significantly. Check Amazon's category-specific fee pages.
  7. Add Other Variable Costs: Include any other costs incurred per unit, such as transaction fees, packaging materials, etc.
  8. Specify Units Sold: Enter the number of units you anticipate selling in the period you're analyzing (e.g., a month).
  9. Click 'Calculate Revenue': The calculator will instantly display your estimated total revenue, total costs, profit, profit margin, and key intermediate values.

Reading Your Results:

  • Primary Result (Profit): This large, highlighted number is your estimated net profit.
  • Intermediate Values: These show a breakdown of total revenue, COGS, Amazon fees, and profit margin, giving you a clearer picture.
  • Key Assumptions: Confirms the fulfillment method and referral fee rate used in the calculation.
  • Table & Chart: Provide a visual breakdown of costs per unit and their proportion of the selling price, helping identify cost centers.

Decision-Making Guidance:

Use the results to:

  • Price Optimization: Adjust the selling price to see how it impacts profit margins.
  • Cost Reduction: Identify areas where reducing COGS or variable costs could significantly boost profits.
  • FBA vs. FBM Decision: Compare the profitability and fee structures of both fulfillment methods.
  • Product Viability: Determine if a product is financially viable to sell on Amazon before investing heavily.

Don't forget to use the 'Reset' button to clear inputs and the 'Copy Results' button to easily share your findings.

Key Factors That Affect Amazon Revenue Calculator US Results

Several factors significantly influence the output of an Amazon Revenue Calculator US. Understanding these is key to obtaining accurate estimates and making sound business decisions:

  1. Product Category & Referral Fees: Amazon assigns different referral fee percentages to different product categories. A product in electronics might have a 10% referral fee, while apparel could be 15%, and certain high-value items or media might have fixed fees or higher percentages. Always use the correct rate for your specific category.
  2. Fulfillment Method (FBA vs. FBM): This is a major cost driver. FBA fees (storage, pick & pack) are often predictable but can add up, especially for bulky or slow-moving inventory. FBM sellers incur their own shipping and handling costs, which can be more variable but may offer higher margins if managed efficiently. The choice impacts which fees are inputted and considered.
  3. Product Size and Weight Tier: Both FBA fulfillment fees and storage fees are heavily dependent on a product's dimensions and weight. Oversize items incur significantly higher fees than standard-size items. The calculator's per-unit estimates for FBA fees should reflect the correct tier.
  4. Cost of Goods Sold (COGS): Your direct cost to acquire the product is fundamental. Fluctuations in manufacturing costs, raw material prices, or supplier negotiations directly impact your profit per unit. Lower COGS directly translates to higher profit.
  5. Seasonality and Storage Duration (for FBA): FBA storage fees are monthly. Longer storage times, especially during peak seasons (like holidays), can increase costs. Seasonal demand can also affect units sold and pricing strategies. Accurate inventory management is crucial to minimize unnecessary storage fees.
  6. Shipping Costs (Especially for FBM): For FBM sellers, the actual cost of shipping to the customer is a critical variable. This includes packaging materials, postage, and handling labor. If the shipping cost charged to the customer doesn't cover the actual expense, it becomes a direct hit to profit.
  7. Return Rates and Processing: High return rates increase costs, whether through return shipping, refurbishment, or write-offs. While not always explicitly in basic calculators, understanding potential return percentages is vital for accurate long-term profit forecasting.
  8. Promotions, Discounts, and Advertising Costs: Sellers often run promotions or pay for Amazon advertising (PPC). While these aren't direct per-unit costs in the same way as referral fees, they significantly reduce overall net profit. Advanced analysis should account for these marketing expenditures.

Frequently Asked Questions (FAQ)

Q1: What is the difference between FBA and FBM fees?

A: FBA (Fulfillment by Amazon) involves fees for storage in Amazon's warehouses and for Amazon handling the picking, packing, and shipping (fulfillment fees). FBM (Fulfillment by Merchant) sellers manage these logistics themselves, so they don't pay FBA fees but incur their own shipping and handling costs. The referral fee applies to both.

Q2: Does the calculator include Amazon advertising costs (PPC)?

A: This specific Amazon Revenue Calculator US focuses on core selling fees (referral, fulfillment, storage). It does not automatically include advertising costs (PPC), which should be factored in separately as a marketing expense to determine overall business profitability.

Q3: How do I find the correct Referral Fee percentage for my product?

A: You can find the referral fee percentages for different product categories in your Amazon Seller Central account under "Help" > "Selling on Amazon Fee Schedule" or by searching Amazon's official seller documentation for "Referral Fees by Category."

Q4: What if my product's dimensions change its FBA fee tier?

A: You need to know your product's exact dimensions and weight after packaging. Amazon categorizes products into tiers (e.g., standard-small, standard-large, oversize). Use these dimensions to look up the specific storage and fulfillment fees for that tier in Seller Central.

Q5: Can I use this calculator for sales outside the US?

A: This calculator is specifically designed for the Amazon Revenue Calculator US marketplace. Fees, currency exchange rates, and regulations differ significantly in other Amazon marketplaces (e.g., Amazon.co.uk, Amazon.de, Amazon.jp). You would need a region-specific calculator for those markets.

Q6: How accurate are the FBA storage fees per unit?

A: The storage fees per unit are estimates based on typical averages. Actual fees depend on the exact size (cubic feet) and weight of your product, as well as the time of year (storage fees often increase in Q4). For precise calculations, refer to your specific product dimensions and Amazon's current fee schedule.

Q7: What does "Other Variable Costs" typically include?

A: This category is for costs beyond COGS and Amazon's main fees. Examples include credit card processing fees (if selling via FBM and not using Amazon's settlement), custom packaging, inserts, labels, polybags, warranty costs, and potential return processing fees not covered by Amazon.

Q8: How do I interpret a negative profit result?

A: A negative profit means your total costs exceed your total revenue for the given inputs. This indicates you are losing money on each unit sold under these conditions. You would need to either increase the selling price, reduce the product cost (COGS), decrease fulfillment/variable costs, or reconsider selling the product on Amazon.

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'red' : 'var(–input-border-color)'; } } function clearErrors() { var errorMessages = document.querySelectorAll('.error-message'); errorMessages.forEach(function(el) { el.textContent = "; el.style.display = 'none'; }); var inputs = document.querySelectorAll('.loan-calc-container input[type="number"], .loan-calc-container input[type="text"], .loan-calc-container select'); inputs.forEach(function(input) { input.style.borderColor = 'var(–input-border-color)'; }); } function validateInput(id, min, max, label) { var value = getInputValue(id); var errorId = id + "Error"; var errorMessage = ""; if (isNaN(value)) { errorMessage = "Please enter a valid number."; } else if (value max) { // errorMessage = label + " cannot exceed " + formatCurrency(max) + "."; // } displayError(id, errorMessage); return !errorMessage; } function calculateRevenue() { clearErrors(); var isValid = true; // Validate core inputs isValid &= validateInput("productPrice", 0, null, "Product Selling Price"); isValid &= validateInput("productCost", 0, null, "Product Cost of Goods Sold"); isValid &= validateInput("shippingCost", 0, null, "Customer Shipping Cost"); isValid &= validateInput("amazonReferralFee", 0, 100, "Amazon Referral Fee"); isValid &= validateInput("otherVariableCosts", 0, null, "Other Variable Costs"); isValid &= validateInput("unitsSold", 0, null, "Units Sold"); var fulfillmentType = document.getElementById("fulfillmentType").value; var fbaFeesSection = document.getElementById("fbaFeesSection"); if (fulfillmentType === "FBA") { fbaFeesSection.style.display = "block"; isValid &= validateInput("fbaStorageFee", 0, null, "FBA Monthly Storage Fee"); isValid &= validateInput("fbaPickPackFee", 0, null, "FBA Pick & Pack Fee"); } else { fbaFeesSection.style.display = "none"; // Clear FBA fee values if FBM is selected to avoid carrying over old data document.getElementById("fbaStorageFee").value = ""; document.getElementById("fbaPickPackFee").value = ""; } if (!isValid) { // If any validation fails, ensure results are reset to default resetResultsDisplay(); return; } var productPrice = getInputValue("productPrice"); var productCost = getInputValue("productCost"); var shippingCost = getInputValue("shippingCost"); var amazonReferralFeePercent = getInputValue("amazonReferralFee"); var otherVariableCosts = getInputValue("otherVariableCosts"); var unitsSold = getInputValue("unitsSold"); var fbaStorageFee = 0; var fbaPickPackFee = 0; if (fulfillmentType === "FBA") { fbaStorageFee = getInputValue("fbaStorageFee"); fbaPickPackFee = getInputValue("fbaPickPackFee"); } // Calculations var totalRevenue = (productPrice + shippingCost) * unitsSold; var referralFeeAmountPerUnit = (productPrice * (amazonReferralFeePercent / 100)); var fulfillmentCostPerUnit = (fulfillmentType === "FBA") ? (fbaPickPackFee + fbaStorageFee) : 0; // For FBM, shipping cost is handled differently (added to other variable costs or passed to customer) var totalAmazonFees = (referralFeeAmountPerUnit + fulfillmentCostPerUnit) * unitsSold; var totalCostOfGoods = productCost * unitsSold; var totalOtherVariableCosts = otherVariableCosts * unitsSold; var totalCosts = totalCostOfGoods + totalAmazonFees + totalOtherVariableCosts; var estimatedProfit = totalRevenue – totalCosts; var profitMargin = (totalRevenue === 0) ? 0 : (estimatedProfit / totalRevenue) * 100; // Update Results Display document.getElementById("primaryResult").textContent = formatCurrency(estimatedProfit); document.getElementById("totalRevenue").textContent = formatCurrency(totalRevenue); document.getElementById("totalCostOfGoods").textContent = formatCurrency(totalCostOfGoods); document.getElementById("totalAmazonFees").textContent = formatCurrency(totalAmazonFees); document.getElementById("estimatedProfit").textContent = formatCurrency(estimatedProfit); document.getElementById("profitMargin").textContent = formatPercent(profitMargin); // Update Key Assumptions document.getElementById("assumptionFulfillment").textContent = fulfillmentType; document.getElementById("assumptionReferralFee").textContent = amazonReferralFeePercent.toFixed(1) + "%"; // Update Cost Breakdown Table (Per Unit) var referralFeePerUnit = referralFeeAmountPerUnit; var effectiveFulfillmentFeePerUnit = fulfillmentCostPerUnit; // This includes FBA fees // For FBM, shipping costs are complex. Let's attribute the customer-paid shipping to revenue and any *extra* shipping cost to 'Other Variable Costs'. // For simplicity here, if FBM, we zero out FBA fees and rely on 'otherVariableCosts' to cover the seller's shipping expenses. if (fulfillmentType === "FBM") { effectiveFulfillmentFeePerUnit = 0; // No FBA fees // Note: The 'otherVariableCosts' input for FBM should ideally cover the seller's actual shipping expense minus what the customer paid. } var totalCostsPerUnit = productCost + effectiveFulfillmentFeePerUnit + referralFeePerUnit + otherVariableCosts; var profitPerUnit = productPrice – totalCostsPerUnit; var productCostPercent = (productPrice === 0) ? 0 : (productCost / productPrice) * 100; var fulfillmentFeesPercent = (productPrice === 0) ? 0 : (effectiveFulfillmentFeePerUnit / productPrice) * 100; var referralFeePercent = (productPrice === 0) ? 0 : (referralFeePerUnit / productPrice) * 100; var otherVariableCostsPercent = (productPrice === 0) ? 0 : (otherVariableCosts / productPrice) * 100; var totalCostsPerUnitPercent = (productPrice === 0) ? 0 : (totalCostsPerUnit / productPrice) * 100; var profitPerUnitPercent = (productPrice === 0) ? 0 : (profitPerUnit / productPrice) * 100; document.getElementById("tableProductCost").textContent = formatCurrency(productCost); document.getElementById("tableFulfillmentFees").textContent = formatCurrency(effectiveFulfillmentFeePerUnit); document.getElementById("tableReferralFee").textContent = formatCurrency(referralFeePerUnit); document.getElementById("tableOtherVariableCosts").textContent = formatCurrency(otherVariableCosts); document.getElementById("tableTotalCostsPerUnit").textContent = formatCurrency(totalCostsPerUnit); document.getElementById("tableProfitPerUnit").textContent = formatCurrency(profitPerUnit); document.getElementById("tableProductCostPercent").textContent = formatPercent(productCostPercent); document.getElementById("tableFulfillmentFeesPercent").textContent = formatPercent(fulfillmentFeesPercent); document.getElementById("tableReferralFeePercent").textContent = formatPercent(referralFeePercent); document.getElementById("tableOtherVariableCostsPercent").textContent = formatPercent(otherVariableCostsPercent); document.getElementById("tableTotalCostsPerUnitPercent").textContent = formatPercent(totalCostsPerUnitPercent); document.getElementById("tableProfitPerUnitPercent").textContent = formatPercent(profitPerUnitPercent); // Update Chart updateChart(productPrice, productCost, effectiveFulfillmentFeePerUnit, referralFeePerUnit, otherVariableCosts); } function resetResultsDisplay() { document.getElementById("primaryResult").textContent = "–"; document.getElementById("totalRevenue").textContent = "–"; document.getElementById("totalCostOfGoods").textContent = "–"; document.getElementById("totalAmazonFees").textContent = "–"; document.getElementById("estimatedProfit").textContent = "–"; document.getElementById("profitMargin").textContent = "–"; document.getElementById("assumptionFulfillment").textContent = "–"; document.getElementById("assumptionReferralFee").textContent = "–"; var tableRows = [ "tableProductCost", "tableFulfillmentFees", "tableReferralFee", "tableOtherVariableCosts", "tableTotalCostsPerUnit", "tableProfitPerUnit", "tableProductCostPercent", "tableFulfillmentFeesPercent", "tableReferralFeePercent", "tableOtherVariableCostsPercent", "tableTotalCostsPerUnitPercent", "tableProfitPerUnitPercent" ]; tableRows.forEach(function(id) { document.getElementById(id).textContent = "–"; }); if (chartInstance) { chartInstance.destroy(); chartInstance = null; } var ctx = document.getElementById('revenueChart').getContext('2d'); ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height); } function resetCalculator() { document.getElementById("productPrice").value = ""; document.getElementById("productCost").value = ""; document.getElementById("shippingCost").value = ""; document.getElementById("fulfillmentType").value = "FBA"; // Default to FBA document.getElementById("fbaStorageFee").value = ""; document.getElementById("fbaPickPackFee").value = ""; document.getElementById("amazonReferralFee").value = ""; document.getElementById("otherVariableCosts").value = ""; document.getElementById("unitsSold").value = "100"; // Sensible default document.getElementById("fbaFeesSection").style.display = "block"; // Show by default resetResultsDisplay(); clearErrors(); // Clear any previous error messages } function copyResults() { var primaryResult = document.getElementById("primaryResult").textContent; var totalRevenue = document.getElementById("totalRevenue").textContent; var totalCostOfGoods = document.getElementById("totalCostOfGoods").textContent; var totalAmazonFees = document.getElementById("totalAmazonFees").textContent; var estimatedProfit = document.getElementById("estimatedProfit").textContent; var profitMargin = document.getElementById("profitMargin").textContent; var assumptionFulfillment = document.getElementById("assumptionFulfillment").textContent; var assumptionReferralFee = document.getElementById("assumptionReferralFee").textContent; var costTableRows = document.querySelectorAll("#costTableBody tr"); var tableContent = "Cost Breakdown Per Unit:\n"; costTableRows.forEach(function(row) { var cells = row.querySelectorAll("td"); if (cells.length === 3) { tableContent += `${cells[0].textContent.trim()} | ${cells[1].textContent.trim()} | ${cells[2].textContent.trim()}\n`; } }); var textToCopy = `— Amazon Revenue Calculation Results — Primary Result (Profit): ${primaryResult} Total Revenue: ${totalRevenue} Total Cost of Goods Sold: ${totalCostOfGoods} Total Amazon Fees: ${totalAmazonFees} Estimated Profit: ${estimatedProfit} Profit Margin: ${profitMargin} Key Assumptions: Fulfillment: ${assumptionFulfillment} Referral Fee Rate: ${assumptionReferralFee} ${tableContent} —————————————–`; // Use Clipboard API navigator.clipboard.writeText(textToCopy).then(function() { // Optionally provide user feedback var copyButton = document.querySelector('button[onclick="copyResults()"]'); var originalText = copyButton.textContent; copyButton.textContent = "Copied!"; copyButton.style.backgroundColor = "var(–success-color)"; setTimeout(function() { copyButton.textContent = originalText; copyButton.style.backgroundColor = "var(–primary-color)"; // Reset to primary color }, 2000); }).catch(function(err) { console.error('Failed to copy: ', err); // Fallback for older browsers or if permissions are denied alert("Could not copy results. Please copy manually:\n" + textToCopy); }); } function updateChart(price, cost, fbaFee, referralFee, otherCosts) { var ctx = document.getElementById('revenueChart').getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } // Chart data var labels = ['Product Cost', 'Fulfillment Fees', 'Referral Fee', 'Other Variable Costs', 'Profit']; var costsData = [cost, fbaFee, referralFee, otherCosts, price – (cost + fbaFee + referralFee + otherCosts)]; var colors = ['#ffc107', '#007bff', '#dc3545', '#6c757d', '#28a745']; // Yellow, Blue, Red, Gray, Green // Ensure profit is not negative for chart visualization var profitValue = Math.max(0, costsData[4]); costsData[4] = profitValue; chartInstance = new Chart(ctx, { type: 'pie', data: { labels: labels, datasets: [{ label: 'Per Unit Breakdown', data: costsData, backgroundColor: colors, hoverOffset: 4 }] }, options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Revenue Distribution Per Unit' } } } }); } // Initial setup and event listeners document.addEventListener('DOMContentLoaded', function() { // Attach input event listeners for real-time updates var inputs = document.querySelectorAll('#calculator-form input, #calculator-form select'); inputs.forEach(function(input) { input.addEventListener('input', calculateRevenue); // Trigger calculation on change for select elements as well if (input.tagName === 'SELECT') { input.addEventListener('change', calculateRevenue); } }); // Set initial placeholder values based on common US figures setPlaceholder("productPrice", "e.g., 29.99"); setPlaceholder("productCost", "e.g., 10.50"); setPlaceholder("shippingCost", "e.g., 4.99"); setPlaceholder("fbaStorageFee", "e.g., 0.75"); setPlaceholder("fbaPickPackFee", "e.g., 3.50"); setPlaceholder("amazonReferralFee", "e.g., 15"); setPlaceholder("otherVariableCosts", "e.g., 0.50"); setPlaceholder("unitsSold", "e.g., 100"); // Set default value for units sold document.getElementById("unitsSold").value = "100"; // Trigger initial calculation if fields have default values or placeholders are set // calculateRevenue(); // Uncomment if you want calculation on page load with defaults // Handle FBA/FBM display toggle document.getElementById("fulfillmentType").addEventListener("change", function() { var fbaFeesSection = document.getElementById("fbaFeesSection"); if (this.value === "FBA") { fbaFeesSection.style.display = "block"; } else { fbaFeesSection.style.display = "none"; } calculateRevenue(); // Recalculate when fulfillment type changes }); // Initial call to set the correct display for FBA fees var initialFulfillmentType = document.getElementById("fulfillmentType").value; if (initialFulfillmentType === "FBA") { document.getElementById("fbaFeesSection").style.display = "block"; } else { document.getElementById("fbaFeesSection").style.display = "none"; } });

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