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Meet the full Unhinged Reseller Desk.
Inventory, sales, returns, expenses, pricing, listing copy, JSON backups and CSV exports in one local-first toolkit. One-time $79. No monthly subscription.
Start with the question you are trying to answer.
Use the general profit calculator when you want a fast estimate of what a sale may leave after item cost, fees, shipping and packaging. Use the Sales & Profit Tracker when you want to save multiple sale records locally and export them. Use the free inventory spreadsheet when you want a simple starter file you can open in Excel or Google Sheets.
Use the eBay Sell-Through Rate Calculator before sourcing when you want a quick demand signal from sold and active listing counts. Then use the eBay profit calculator to check whether that demand still leaves enough money after your costs.
Use the ROI calculator when you are deciding whether the money tied up in an item is producing a worthwhile return. Use the pricing calculator when you know the profit you want and need to work backward to a minimum selling price. The marketplace-specific calculators are useful when you want to model an eBay, Poshmark or Mercari sale with the costs you expect today.
These tools are deliberately focused. They help answer one question at a time. If you need inventory, sales, returns, expenses and profit to stay connected across your whole resale business, that is the job of the full Unhinged Reseller Desk.