PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $606.36 |
| PSA 7 | $925 |
| PSA 8 | $1267.72 |
| PSA 9 | $1557.87 |
| PSA 10 | $5500 |
| BGS 10 | $7150 |
| CGC 10 | $314 |
| SGC 10 | $3300 |
Market context: ungraded price -9.9% over 30 days. +3.3% over 90 days. PSA 10 premium: 9.1× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-promo/pokemon-japanese-promo-mewtwo-game-boy-150