PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $1.39 |
| PSA 9 | $10.81 |
| PSA 10 | $19.38 |
| BGS 10 | $25 |
| CGC 10 | $10 |
| SGC 10 | $12 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-terastal-festival/pokemon-japanese-terastal-festival-cornerstone-mask-ogerpon-ex-91