PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $4.53 |
| PSA 8 | $20 |
| PSA 9 | $21 |
| PSA 10 | $42.55 |
| BGS 10 | $55 |
| CGC 10 | $34.19 |
| SGC 10 | $26 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-expedition-expansion-pack/pokemon-japanese-expedition-expansion-pack-diglett-20