Mew

A PSA 10 English Mew (XY Black Star Promos XY110/211) is worth about €9,588 (≈ $10,690), based on 11 sales in the last 12 months, blended with an estimate from PSA 9 (18 PSA 9 sales); most sales fall between €7,103 and €17,467. A PSA 9 English Mew (XY Black Star Promos XY110/211) is worth about €1,181 (≈ $1,317), based on 21 sales in the last 12 months, blended with an estimate from PSA 10 (10 PSA 10 sales); most sales fall between €633 and €1,531. A PSA 8 English Mew (XY Black Star Promos XY110/211) is worth about €316 (≈ $353), based on 23 sales in the last 12 months, blended with an estimate from PSA 9 (18 PSA 9 sales); most sales fall between €259 and €386. Over the last 12 months the PSA 10 value changed by +285.0%.

EverySlab recomputes the Mew fair values every day, most recently on Oct 28, 2026. Each grade and language gets a median of completed sales from the last 12 months on eBay, Fanatics Collect and Goldin, with older sales adjusted to today's market and recent sales counting more; thinly traded grades are estimated from related grades and languages. How fair value works

None sold on EU venues in the last 90 days (23 copies on all venues), so there is no EU pace to time a sale from. Listed at €316, one copy nets about €285 on Cardmarket after fees.