PriceCharting market prices as of :
| Condition / grade | Price (USD) |
|---|---|
| Ungraded | $2.61 |
| PSA 9 | $26.99 |
| PSA 10 | $82.65 |
| BGS 10 | $107 |
| CGC 10 | $50 |
| SGC 10 | $50 |
TCGplayer market price: $1 (as of 2026-07-05)
Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-heartgold-collection/pokemon-japanese-heartgold-collection-professor-oak-s-new-theory-68