Mewtwo GX from the GX Battle Boost set (#36) is a Pokemon trading card released in 2017. Current fair market values for Mewtwo GX are PSA 10: $151, PSA 9: $21.99, Raw: $6.76. The most recent PSA 10 sale was $151 on August 15, 2026, with 24 sales tracked in the last 30 days. The most recent PSA 9 sale was $21.99 on July 23, 2026. A raw (ungraded) copy last sold for $6.76 on August 17, 2026. CardIndex has tracked 68 total sales across all grades for this card. There are currently 16 active listings for Mewtwo GX.