PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $6.99 |
| PSA 7 | $20.28 |
| PSA 8 | $25 |
| PSA 9 | $52 |
| PSA 10 | $169.23 |
| BGS 10 | $220 |
| CGC 10 | $124.76 |
| SGC 10 | $102 |
TCGplayer market price: $10.76 (as of 2026-07-05)
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-secret-wonders/pokemon-secret-wonders-gastrodon-west-sea-9