PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $22 |
| PSA 9 | $122.82 |
| PSA 10 | $299.48 |
| BGS 10 | $389 |
| CGC 10 | $180 |
| SGC 10 | $180 |
Market context: ungraded price -18.5% over 30 days. PSA 10 premium: 13.6× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-regigigas-half-deck/pokemon-japanese-regigigas-half-deck-mewtwo-card