Choose the question you need to answer. Every tool uses the same calculation engine; marketplace presets are starting assumptions you can edit.
- General resale profit calculator: compare revenue with item cost, fees, shipping and supplies.
- eBay profit calculator: common US non-Store fee assumptions and tax in the fee base.
- Poshmark profit calculator: the small-sale flat fee and percentage threshold.
- Mercari profit calculator: buyer-paid shipping in the seller fee base.
- Reseller ROI calculator: profit compared with cash invested.
- Maximum buy price calculator: a cost ceiling from your sale estimate and target.
- Break-even price calculator: the modeled cost-recovery price.
These are estimates in US dollars, not guaranteed sale prices or marketplace invoices. Read the calculation method and fee sources. Calculator amounts stay in your browser; optional analytics records tool events without those amounts.
For a record you can keep between sales, download FlipFinds.