PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $275.03 |
| PSA 7 | $317.5 |
| PSA 8 | $340 |
| PSA 9 | $475 |
| PSA 10 | $2075 |
| BGS 10 | $2600 |
| CGC 10 | $787.31 |
| SGC 10 | $506.64 |
TCGplayer market price: $316.65 (as of 2026-07-05)
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-promo/pokemon-promo-mewtwo-mew-gx-SM191