This is a web version of a Google Sheets template. Yellow cells are inputs; everything else calculates. Fee percentages are examples only; set them to your marketplace's current rates (Etsy, Amazon, Shopify, eBay…).
| Product | Unit cost | Price | Fee % (example) | Fixed fee/order | Shipping+ads/order | Total fees | Profit/order | Margin |
|---|
Total fees: =C2*D2+E2
Profit/order: =C2-B2-G2-F2
Margin: =IFERROR(H2/C2,0)
Red when losing money: conditional format H2<0