PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $63.99 |
| PSA 7 | $38.52 |
| PSA 8 | $94.22 |
| PSA 9 | $117.3 |
| PSA 10 | $1838.82 |
| BGS 10 | $2390 |
| CGC 10 | $1103 |
| SGC 10 | $1103 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-ex-ruby-%26-sapphire-expansion-pack/pokemon-japanese-ex-ruby-%26-sapphire-expansion-pack-mewtwo-ex-26