Professor Oak's New Theory 101/123 – HeartGold & SoulSilver Value & Price
HeartGold & SoulSilverUncommon2010
Market price · Reverse Holo
$6.99
#99 of 124 priced cards in HeartGold & SoulSilver
Professor Oak's New Theory prices by variant
| Variant | TCGplayer | Low | High | Cardmarket |
|---|---|---|---|---|
| Normal | $0.74 | €0.27 | ||
| Reverse Holo | $6.99 | €0.64 |
TCGplayer market (USD) and Cardmarket trend (EUR), raw near-mint copies · Updated Oct 15, 2026. Estimated market values from recent sales data. Not an offer to buy, and not financial advice.
Price history
Reverse Holo · since Nov 2, 2026+0.0% ▲
- High
- $6.99
- Low
- $6.99
High $6.99 · Low $6.99 since tracking began on Nov 2, 2026.
About Professor Oak's New Theory 101/123
Professor Oak's New Theory 101/123 from HeartGold & SoulSilver has a TCGplayer market price of $6.99 for the Reverse Holo version as of Oct 15, 2026.
It is the 99th most valuable card in HeartGold & SoulSilver (of 124 priced cards).
Professor Oak's New Theory 101/123 is an Uncommon card, illustrated by Ken Sugimori, released Feb 10, 2010.
- Number
- 101/123
- Rarity
- Uncommon
- Artist
- Ken Sugimori
- Release date
- Feb 10, 2010
- Type
- Trainer · Supporter
- Prices updated
- Oct 15, 2026
