revaTools
These free tools do the maths resellers repeat every day. Work out profit after fees, ROI per flip, the break-even sale price, the most you should pay for an item, a quick-sale price, marketplace fees in zł, euros or pounds and inventory turnover. The sell-through rate calculator sits on the sell-through rate glossary page, and the inventory and profit tracker spreadsheet is here. Each calculator comes with a short explanation of the formula and its limits. All results are estimates based on the numbers you enter.
Calculators and templates
Marketplace fee calculator for Vinted, Allegro Lokalnie and eBay UK, DE and PL: seller and buyer fees in zł, euros or pounds, with dated sources.
7 min read
Free resale profit calculator: enter buy price, sale price, marketplace fees, shipping and extras to see net profit, margin and ROI in zł, euros or pounds.
7 min read
Free reseller inventory and profit tracker spreadsheet for Sheets and Excel: profit, ROI and days to sell per item, plus Poland limit and DAC7 views to add.
7 min read
Work backwards from expected sale price, fees, shipping and your target profit or ROI to the most you should pay for an item. Free max buy price calculator.
7 min read
Find the lowest sale price that covers what you paid, marketplace fees and shipping. Free break-even calculator for resellers deciding how far to mark down.
7 min read
Estimate a quick-sale price for a second-hand item from the asking prices you see, then check it against your break-even so a fast sale isn't a loss.
6 min read
Convert between cost, selling price, markup and margin — and see why a 50% markup is not a 50% margin, with resale examples that include fees.
6 min read
Free reselling ROI calculator: work out return on investment per flip after fees and costs, compare deals by annualised return, and see why ROI isn't margin.
6 min read
Free inventory turnover calculator for resellers: cost of items sold divided by average stock value, plus days in stock, to see how fast cash comes back.
6 min readStart with reva
One place to find underpriced items, check their market value and act before someone else does.