PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $72 |
| PSA 8 | $84.03 |
| PSA 9 | $143.5 |
| PSA 10 | $750 |
| BGS 10 | $975 |
| CGC 10 | $38.29 |
| SGC 10 | $450 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-miracle-twins/pokemon-japanese-miracle-twins-mewtwo-mew-gx-97