Does Your Sneaker Size Cost More? Same Shoe, Different Size

Across 35 sneaker models (11 to 35 per size), each counted once, in the last 90 days of GOAT sales: sizes 11, 11.5, 12, 13 and 14 clearly sold for more than the same shoe across all sizes, by about 2% to 16%. Sizes 8, 8.5 and 9 clearly sold for less, by about 3% to 5%. The other sizes are about the same (their 95% range sits inside 5%) or too close to call.

Each model counts once, with its own same-shoe premium at that size (100 or more comparable sales); sizes with at least 10 such models. Typical premium is the median across models, and the 95% range comes from the models themselves (no curve assumed). A size is called dearer or cheaper only when that range leaves out 0 and a sign test on models above vs below holds after Benjamini-Hochberg correction over the sizes shown (q under 0.05). "About the same" means within 2% with a range inside 5% either way. The smallest and biggest sizes rest on fewer models. For a listing-by-listing version, see why bigger sizes cost more (measured against the same shoe in sizes 9 to 11, Jul 28 to Oct 25, so its figures differ by a point or two and size 9 is part of its baseline). The last 90 days of GOAT sales, not a forecast.

Each size is compared with the same colorways in every other size, so a size does not look expensive just because pricier pairs happen to sell in it, and every colorway counts once, so one hype shoe cannot set the number. Completed GOAT sales in the last 90 days, men's pairs only (GS, PS, TD and women's releases are left out because they share size numbers). For every colorway with 20 or more sized sales we take its median across all sizes; each sale is divided by its own colorway's median, and "vs same shoe" is the median of those ratios for a size, minus 1. Only sizes with 100 or more such sales are ranked; "about the same" means within 2%. A size is called dearer or cheaper only when the 95% range for that median (from the colorways themselves, no curve assumed) leaves out 0 and a sign test across colorways holds after Benjamini-Hochberg correction over that model’s sizes with 100 or more such sales and 6 or more colorways (q under 0.05); otherwise it reads "too close to call", or "not enough colorways to tell" when the range is wider than 20 points. "About the same" also needs the range to stay within 5% either way. StockX sales carry no size, so they are not used. GOAT also sells used pairs, which we cannot separate. Updated daily. Past sales, not a price guarantee and not financial advice.