Signal Paths

What did you actually keep?

Drop one export and see your contribution per unit, your real break-even ACOS, and what returns are costing you — by parent product, for last month. No account, no email, no call.

Drop a Sellerboard export here Dashboard → Products → Group by parent → export as CSV, with the period set to a complete month.

The file never leaves your computer. This page does the arithmetic in your browser. Nothing is uploaded, stored or sent anywhere — you can disconnect from the internet and it still works.

Not on Sellerboard? Work it out by hand

Six figures for one product line, last month. Rough is fine — the point is the shape, not the decimal place.

Sales ($) Units sold Cost of goods ($) Amazon fees ($) Refund cost ($) Ad spend ($)