PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $36.35 |
| PSA 8 | $16.5 |
| PSA 9 | $50 |
| PSA 10 | $329.99 |
| BGS 10 | $429 |
| CGC 10 | $42 |
| SGC 10 | $198 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-best-of-xy/pokemon-japanese-best-of-xy-mewtwo-spirit-link-133