PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $4 |
| PSA 9 | $4.99 |
| PSA 10 | $43.29 |
| BGS 10 | $56 |
| CGC 10 | $26 |
| SGC 10 | $26 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-ex-battle-boost/pokemon-japanese-ex-battle-boost-keldeo-ex-37