PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $2.05 |
| PSA 8 | $16 |
| PSA 9 | $51.41 |
| PSA 10 | $113.05 |
| BGS 10 | $147 |
| CGC 10 | $68 |
| SGC 10 | $68 |
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-poliwhirl-1999-2000-38