Professor Oak's New Theory 101/123 · HeartGold & SoulSilver
Professor Oak's New Theory · 101/123 · UNCOMMON

HeartGold & SoulSilver · HeartGold & SoulSilver · 2010
NormalReverse
| Market | Low | Mid | |
|---|---|---|---|
| Normal◀ This pocket | $0.74 | $0.25 | $0.75 |
| Reverse holo | $6.99 | $4.00 | $14.08 |
TCGplayer prices · updated 2026/10/15 · View on TCGplayer ↗