Many sellers know their revenue but not the profit per product after platform fees, shipping, returns and ads. I will calculate it and give you a calculator you can reuse.

For each product you get: full cost (purchase price, platform commission, fulfillment and shipping, returns, ads, taxes you name); margin in money and in percent; minimum price that does not lose money; maximum ad spend per sale that keeps the margin you want.

Why me: I rebuilt the ad budget of a marketplace sales division around per-product unit economics. Ad cost share went from 7.4% to 5.2% of revenue, and margin went from 9.8% to 17.5%.

Works for Amazon, Shopify, Etsy, eBay and other marketplaces, using your actual fee structure.

I use AI tools to work faster and check every number against your data. If you need work done without AI, tell me before ordering.