PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $674.27 |
| PSA 7 | $1000 |
| PSA 8 | $1077.5 |
| PSA 9 | $1432.24 |
| PSA 10 | $5834.23 |
| BGS 10 | $7585 |
| CGC 10 | $314 |
| SGC 10 | $3501 |
Market context: ungraded price +14.9% over 30 days. +15.2% over 90 days. PSA 10 premium: 8.7× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-promo/pokemon-japanese-promo-mewtwo-game-boy-150