PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $2.7 |
| PSA 8 | $14.99 |
| PSA 10 | $51.19 |
| BGS 10 | $67 |
| CGC 10 | $31 |
| SGC 10 | $31 |
Market context: ungraded price -5.6% over 30 days. -6.9% over 90 days. PSA 10 premium: 19.0× ungraded.
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-base-set/pokemon-base-set-water-energy-1999-2000-102