PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $346.55 |
| PSA 7 | $354 |
| PSA 8 | $443.08 |
| PSA 9 | $999 |
| PSA 10 | $4342.3 |
| BGS 10 | $5645 |
| CGC 10 | $2605 |
| SGC 10 | $2605 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-legendary-collection/pokemon-legendary-collection-mewtwo-box-topper-S4