PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $17.5 |
| PSA 8 | $60 |
| PSA 9 | $86 |
| PSA 10 | $600 |
| BGS 10 | $780 |
| CGC 10 | $360 |
| SGC 10 | $360 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-promo/pokemon-promo-mewtwo-v-union-card