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TWO TOOLS · TWO DIFFERENT QUESTIONS

Which flip calculator should you use?

Start with the regular profit calculator to see whether a potential resale has enough margin. Use the Flip Decision Kit when you want to test that estimate against actual sold prices, fees, uncertainty and your return target.

1. Free Profit Calculator

Question: “If I buy and sell at these prices, how much might I earn?”

Enter your purchase price, expected selling price, shipping and selling fees. Review estimated net profit, ROI and break-even selling price.

Best for: a quick first screening of an item.

Open Profit Calculator →

2. Flip Decision Kit

Question: “Is this purchase still attractive when I use real sold comparisons and allow for risk?”

Enter purchase costs, marketplace fee, target ROI, risk buffer, downside discount, time estimate and up to five sold comparables.

Best for: deciding your maximum sensible purchase price and testing less optimistic outcomes.

Open Flip Decision Kit →

How to use the Flip Decision Kit

  1. Buy price: what you would pay for the item.
  2. Marketplace fee: your expected selling fee percentage; check the current fee for your account and category.
  3. Shipping + prep: postage, packing, cleaning and other direct costs.
  4. Target ROI: your minimum desired return relative to the investment.
  5. Risk buffer: extra dollars reserved for surprises.
  6. Downside discount: the percentage by which you stress-test the resale price if the market is weaker.
  7. Estimated time: the hours you expect to spend on the flip.
  8. Sold comps: prices of genuinely comparable items that have sold, not active asking prices.

Example: a used item you can buy for $18

Suppose comparable sold listings are $29, $30, $32, $34 and $35. The median is $32. With a 13.6% marketplace fee, $3 risk buffer and no additional shipping/prep costs, a sale at $32 leaves an estimated $6.65 after the $18 purchase and the buffer. A 15% downside discount lowers the assumed sale price to $27.20, making the margin much tighter.

What it means: the regular calculator can show the profit at a chosen $32 sale price; the Decision Kit helps you judge whether $32 is realistic and how sensitive the deal is to lower prices. Estimates are not guaranteed sale outcomes.

Which one first?

Use the Profit Calculator to screen items quickly. When a deal looks promising, use the Flip Decision Kit to decide whether to buy, negotiate or walk away.

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