Professor Oak's New Theory 101/123
Illustrated by Ken Sugimori
Price
- Cardmarket
- €0.20
- TCGplayer
- $0.74
- Reverse on Cardmarket
- €2.74
- Reverse on TCGplayer
- $6.99
Prices as of November 11, 2026. It's the 113th most expensive card in HeartGold & SoulSilver, out of 121 with a price.