Free reseller metric
Sell-through rate calculator
Sell-through rate = items sold ÷ items listed. It tells you how fast a category or your whole shop is moving. Over roughly 30 days, above 20% is healthy resale performance.
Benchmarks: under 5% = slow / overpriced or wrong category · 5–20% = steady · 20–50% = strong · above 50% = you could likely raise prices or list more.
How to use sell-through rate
Sell-through rate is the single best gauge of whether your inventory is priced and categorised well. A low rate usually means prices are too high, the category is saturated, or listings need better photos and titles. A very high rate can mean you're leaving money on the table and could raise prices or list more.
Track it per category and over a fixed window (30 days is standard) so the numbers are comparable. Crosslisting the same items to more marketplaces is one of the fastest ways to lift sell-through, because each item is seen by more buyers.
A worked example
Suppose you listed 60 items last month and sold 14. Your sell-through rate is 14 ÷ 60 = 23%, which sits in the "strong" band. If those 14 sales happened over 30 days, that's roughly one sale every 2.1 days. Compare that to a category where you listed 40 and sold only 2 — a 5% rate that signals prices are too high or the category is saturated. Watching the rate per category tells you where to source more, where to cut prices, and where you could raise them.
How to improve a low rate
If your sell-through is under 5%, work through the usual causes in order: price (benchmark against sold comps, not active listings), photos and titles (the first image and the first few words do most of the selling), category and keywords, and reach. Listing the same inventory across more marketplaces multiplies the audience without extra sourcing, which is often the quickest lever of all.