FirstMetrics connects to your selling platforms and calculates true net profit after every fee. Most resellers think they're profitable everywhere. They're not.
The math hides in the fees. Here's what most resellers miss.
Etsy charges listing + transaction + payment processing. eBay adds final value fees. It compounds fast and silently.
Reconciling sales across 3–5 platforms manually is a part-time job. And the numbers still aren't quite right.
You know what sold, but not whether your estate sale hauls beat your retail arbitrage runs. Until now.
See true net profit per platform after every fee — listing, transaction, payment processing. Stop guessing which channel is worth your time.
Know exactly how much capital is idle. Items unsold 60+ days get flagged automatically so you can reprice or move on.
Track actual return per sourcing location — thrift stores, estate sales, wholesale. Double down on what works.
Generate a complete profit and loss statement you can hand directly to your accountant. COGS, expenses, net income — all calculated.
Get specific, data-driven recommendations with dollar amounts. Not vague tips — "Move $340 of slow eBay inventory to Poshmark."
No accountant required.
Link Etsy and eBay via OAuth in seconds. Upload Mercari, Poshmark, and Depop CSV exports. We handle the parsing.
Every fee, every COGS, every shipping charge stripped out — giving you actual net profit per sale, per platform, per month.
A single dashboard shows which platforms deserve more inventory and which ones are quietly losing you money.
Start free. Upgrade when you need more.
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Start with 50 free sales per month. No credit card required.
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