PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $56.79 |
| PSA 8 | $46.01 |
| PSA 9 | $52.32 |
| PSA 10 | $300 |
| BGS 10 | $390 |
| CGC 10 | $180 |
| SGC 10 | $180 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-undone-seal/pokemon-japanese-undone-seal-regirock-ex-55