How it helps
Use it for a focused task
The page leads with the estimator form and a live results panel. Below that, a quick-reference card lists common platform fee structures and shipping supply costs people forget.
A walkthrough section explains how to use the calculator with a real example (a vintage jacket). Common mistakes and assumptions follow, plus a compact FAQ.
Pick a category preset or enter your numbers manually: purchase price, repair or cleaning costs, expected selling price, platform (eBay, Poshmark, Mercari, Facebook Marketplace, or custom), and shipping details. The profit panel updates instantly.



