How it works
- Enter the item price, shipping charged to the buyer, your item cost and your shipping cost.
- Add your ad spend as a share of the price and the margin you want.
- Edit each platform fee to match your current fee schedule, or add your own.
- Compare net profit and margin per sale, and use the break-even and target prices to adjust your listing.
What the calculator counts
For each platform it applies a percentage fee to the item price plus shipping charged to the buyer, adds a fixed fee per order, then subtracts ad spend, your item cost and your real shipping cost. What is left is net profit per sale.
Why margin differs so much by platform
The same product can leave very different profit depending on where you sell it, because percentage fees, fixed fees and ad spend stack. Looking at net profit, not just the listed fee, shows which channel actually pays.