PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $3.82 |
| PSA 8 | $20 |
| PSA 9 | $27.86 |
| PSA 10 | $33 |
| BGS 10 | $43 |
| CGC 10 | $20 |
| SGC 10 | $20 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-rulers-of-the-heavens/pokemon-japanese-rulers-of-the-heavens-grumpig-30