Model a resale buy with sell-through probability, returns, sourcing mileage, time value, fees, shipping and target ROI — not just profit if everything goes right.
Model reviewed September 4, 2026 · Inputs stay in your browser
This tool is designed to combine assumptions that are usually split across several simpler calculators. Every real-world rate is editable.
Enter your assumptions and calculate.
Why this goes deeper
A normal reseller calculator tells you what happens if the item sells and stays sold. This decision calculator also includes the chance it does not sell in your chosen horizon, the chance it comes back, the miles required to source it, and the value of the time you spend finding and listing it.
USE THE RESULT AS A DECISION BOUNDARY
Use conservative sold prices and a sell-through percentage that matches the time window you actually care about. The risk-adjusted ROI is deliberately harder to satisfy than simple item-cost ROI.
What the max-buy result means
The max-buy output solves backward from your target risk-adjusted ROI. It is a sourcing ceiling, not a suggested offer. If the item only works at an optimistic sale price or return assumption, treat it as a weak buy.
Why this calculator exists
There are many good single-formula calculators. This one is intentionally more complex: it helps answer a decision where several risks and costs interact. Complexity is useful only when the extra inputs change what you would do.
Spreadsheet version
Want to save or modify this model?
Use the matching Reseller Buy Decision Calculator Google Sheets template to keep scenarios, change assumptions or extend the model.