The eBay Seller Fee and Profit Calculator computes complete transaction costs for eBay marketplace sales, including Final Value Fees (FVF), per-order fixed fees, promoted listing advertising costs, shipping margins, and net profit.

### Fee Structure Breakdown eBay marketplace fees are calculated on the total amount paid by the buyer (item selling price plus shipping charged): - **Total Charged to Buyer**: $\text{Gross Revenue} = \text{Item Price} + \text{Shipping Charged}$ - **Final Value Fee (FVF)**: Standard category baseline is 13.25% on total revenue plus a fixed $\$0.40$ per-order insertion fee: $$\text{FVF} = (\text{Gross Revenue} \times 0.1325) + 0.40$$ - **Promoted Listings Fee**: $\text{Gross Revenue} \times \left( \frac{\text{Ad Rate %}}{100} \right)$ - **Net Profit**: $\text{Gross Revenue} - \text{Total eBay Fees} - \text{Actual Shipping Paid} - \text{Cost of Goods (COGS)}$ - **Net Profit Margin**: $\left( \frac{\text{Net Profit}}{\text{Gross Revenue}} \right) \times 100$

### Worked Calculation Example Selling a collectible item for $120.00 with $12.00 shipping charged to the buyer ($132.00 total gross revenue): - **Cost of Goods (COGS)**: $40.00 - **Actual Postage Label Cost**: $9.50 - **Promoted Listing Ad Rate**: 3.5% - **Final Value Fee**: $(132.00 \times 0.1325) + 0.40 = 17.49 + 0.40 = \$17.89$ - **Promoted Ad Fee**: $132.00 \times 0.035 = \$4.62$ - **Total eBay Fees**: $17.89 + 4.62 = \$22.51$ - **Net Profit**: $132.00 - 22.51 - 9.50 - 40.00 = \$59.99 \approx \$60.00$ - **Profit Margin**: $(60.00 / 132.00) \times 100 \approx 45.5\%$

### Client-Side Execution & Privacy Fee formulas evaluate locally in your browser memory. No wholesale inventory costs, sales volumes, or store revenue figures are transmitted across the internet.