The fee starts with buyer payment
For the supported rule, gross buyer payment combines the item price, shipping charged to the buyer, and collected sales tax. The percentage fee is modeled from that total even though collected sales tax is not treated as seller revenue in the profit result.
Percentage fee and order fee are separate
The current scoped rule models the published first-tier percentage and a fixed per-order charge. MarketCalcs displays them as separate lines so the fee total can be inspected rather than hidden behind an effective percentage.
This guide describes only the calculator's visible support range. It is not a complete list of every eBay fee or account condition.
Proceeds and profit answer different questions
- Net proceeds subtract modeled platform fees from seller revenue.
- Net profit then subtracts item, postage, packaging, and other seller costs.
- Profit margin compares net profit with seller revenue, not buyer-paid sales tax.
Why the estimate stops at $7,500
The public official scenarios and the first published fee tier support a narrow regression-tested range. Above $7,500, the next tier creates a rounding question not answered by the available official material. MarketCalcs blocks that range instead of extrapolating an unverified billing rule.
Check the source and then calculate
The rule traces to the eBay Seller Center fee scenarios and related official fee materials. Review the full calculation methodology, then use the eBay fee calculator to test a listing.