PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $2.99 |
| PSA 9 | $40 |
| PSA 10 | $69.41 |
| BGS 10 | $90 |
| CGC 10 | $42 |
| SGC 10 | $42 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-promo/pokemon-promo-thundurus-BW41