PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $3.92 |
| PSA 8 | $26.16 |
| PSA 9 | $27.47 |
| PSA 10 | $85.87 |
| BGS 10 | $112 |
| CGC 10 | $52 |
| SGC 10 | $52 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-diglett-1999-2000-47