The number that matters on eBay is not the sale price, it is what is left after the final value fee, the fixed per-order fee, the shipping you actually pay and the packaging you never think to count. This calculator puts all of those in one place. Enter what the item cost you, what you sold it for, what you charged for shipping and what shipping really cost, pick your store level and category, and you get net profit, return on your cost, margin, and the break-even price you must not sell below. It is built for people who buy to resell and need to know before listing whether a deal is worth doing.
eBay's main charge is the final value fee: a percentage of the total amount the buyer pays, including the shipping they pay you, plus a small fixed amount per order. The percentage depends on the category, so the same $50 item can carry a noticeably different fee as a book than as a piece of clothing. Selecting the right category here matters more than most sellers assume.
Store subscriptions change the maths in a way a single-sale view cannot show. A monthly store fee only pays for itself at volume, and the free-listing allowance that comes with it is the part that usually decides. This calculator prices the individual sale; if you are choosing a store tier, compare your expected monthly listing count against the allowance rather than the fee alone.
Break-even is the most useful output for resellers. Because the fee is charged as a percentage of what the buyer pays, you cannot simply add your costs together — you have to divide the cost side by one minus the fee rate. The break-even figure shown here already does that, so it is the lowest price at which you make nothing rather than lose money, and it is the number to keep in your head when you accept offers.
This tool is most useful during planning and review cycles: setting targets, evaluating performance, or comparing options. Standardised metrics make comparisons across periods or business units reliable.
A common mistake is comparing metrics that use different definitions — gross margin versus net margin, revenue versus profit, customer count versus paying customer count. Always confirm the definition of each input before comparing results across periods or sources.
A startup founder uses the calculator to determine break-even point: fixed monthly costs $12,000, variable cost per unit $18, selling price $42. Break-even is 500 units per month — a concrete sales target that the team can evaluate against pipeline and capacity.
eBay net profit, ROI and break-even
Fees = (Category rate × (Sale price + Shipping charged)) + Per-order fee
Net profit = Sale price + Shipping charged − Item cost − Shipping paid − Packaging − Fees
ROI % = (Net profit ÷ Item cost) × 100
Break-even price = (Item cost + Shipping paid + Packaging + Per-order fee) ÷ (1 − Category rate)
The final value fee applies to everything the buyer pays, so shipping income is not fee-free. Break-even needs a division rather than a sum because the fee grows with the price you charge. ROI is measured against your item cost, which is the number that limits how many flips you can run at once.
You buy a jacket for $15 and sell it for $50 plus $8 shipping. Postage costs you $7 and packaging $1.50. Category rate 13.25% plus a $0.40 per-order fee, no store subscription.
Result: Net profit $26.41 — 45.5% margin and 176% return on the $15 buy price
For resale, 30–50% net margin after every cost is strong and 20% is about the practical floor, because returns, damaged parcels and the occasional mispriced item have to be absorbed somewhere.
Yes. The final value fee is calculated on the total amount the buyer pays, which includes their shipping. Moving cost from the item price into the shipping charge does not avoid the fee.
You divide your total costs plus the fixed per-order fee by one minus the fee rate. Adding costs together is not enough, because the fee itself scales with whatever price you set.
It depends on listing volume, not on the sale. The subscription buys a larger free-listing allowance, so compare your monthly listing count against the allowance for each tier before subscribing.
Margin measures profit against the money the buyer paid; ROI measures profit against the money you put in. A cheap item with a modest margin can still have an excellent ROI, which is what matters when your buying budget is limited.