Try the free worked example and download its source CSVs before buying. https://pelmeskaaaa.github.io/order-tools/order-profit/

Match sales with what you paid for the goods. See which orders made money and which still need checking.

Open one HTML file in your desktop browser. Import prepared sales and purchase CSVs, map the columns, then link each sale to its purchase costs. You can split a shared purchase across several orders.

Missing costs stay unresolved. Refunds, fees and seller tax are handled through explicit fields. Each currency has its own total. Download the results as CSV and keep the full calculation audit as JSON.

The package includes the offline app, editable source, a quick-start guide, sample files and automated checks. Your files stay in your browser. No account, API key or Python installation is needed.

This works with prepared order totals. Native eBay or Amazon exports may need aggregation first. It does not download marketplace data or provide bank reconciliation. Profit here means order contribution before overheads and income tax.

All examples use fictional data.