Source
Start with where to source resale inventory and define the products you can verify confidently.
FREE RESELLER TOOLS
Free reseller calculators for profit, ROI, margin and maximum buy price.
Free UK reseller calculators for eBay safe bids, resale profit, ROI, margin and break-even purchase price. Use your own costs with no sign-up required.
AUCTIONS
eBay Safe Bid Calculator
Work backwards from expected resale and target profit to a maximum sensible auction bid.
EBAY PROFITeBay Resale Profit Calculator
Include purchase price, postage, repairs, selling costs and expected sale price.
RETURNReseller ROI Calculator
Measure expected profit against the capital you put into the item.
MARGINResale Margin Calculator
Measure expected profit as a percentage of your sale revenue.
BUY PRICEBreak-Even Buy Price Calculator
Calculate the maximum purchase price after costs and target profit.
GENERALResale Profit Calculator
Use the original multi-market resale calculator already on ResellBot.uk.
RESELLER TOOLKIT
Calculators are one part of a complete reseller tool stack.
Use the free calculators to set your buying rules. When you want to apply those rules repeatedly, reseller bot software can monitor searches, surface candidates and keep the decision linked to the eventual resale result.
Decide
Use profit, ROI, margin and maximum-buy-price calculations before you commit capital.
Monitor
Use the eBay bot or Vinted bot workflows when repeated marketplace checking becomes the bottleneck.
Why are these calculators free?
Useful SEO should also be useful to a reseller. These tools work without a licence or sign-up. If you later want saved-search monitoring, local AI, market evidence, Discord alerts and auction tracking around the calculation, that is what the paid Resell AutoBot app provides.