| Set | HeartGold & SoulSilver |
| Card number | 101 |
| Rarity | Uncommon |
| Type | Trainer |
| HP | 0 |
| Artist | Ken Sugimori |
| Released | Feb 2010 |
Professor Oak's New Theory #101 Value (HeartGold & SoulSilver)
Pokemon card price guide: raw and graded values, eBay sold prices and price history. Updated Sep 17, 2026.
Current prices
| Source | Price |
|---|---|
| TCGplayer market price (USD) | $5.95 |
| TCGplayer mid price (USD) | $0.61 |
| Cardmarket lowest near mint (EUR) | €0.20 |
| Cardmarket 7-day average (EUR) | €0.23 |
| Cardmarket 30-day average (EUR) | €0.24 |
| Cardmarket listings available | 744 |
Buy / compare: TCGplayer · eBay · eBay sold · Cardmarket
Scan this card with the pokémon scanning app to track its value in your collection.
Professor Oak's New Theory price history
| Month | Avg Cardmarket low | Avg TCGplayer market |
|---|---|---|
| Sep 2026 | €0.20 | $5.92 |
| Aug 2026 | €0.20 | $4.49 |
| Jul 2026 | €0.20 | $0.76 |
| May 2026 | €0.07 | $0.76 |
| Apr 2026 | €0.05 | $0.76 |
| Mar 2026 | €0.14 | $0.73 |
| Feb 2026 | €0.14 | $0.73 |
Frequently asked questions
How much is Professor Oak's New Theory #101 worth?
How much is Professor Oak's New Theory #101 worth? As of Sep 17, 2026, a raw near mint copy is worth about $5.95, the Cardmarket low is €0.20. Prices update daily from Cardmarket, TCGplayer and eBay sold listings.
What is Professor Oak's New Theory #101 worth?
How much is Professor Oak's New Theory #101 worth? As of Sep 17, 2026, a raw near mint copy is worth about $5.95, the Cardmarket low is €0.20. Prices update daily from Cardmarket, TCGplayer and eBay sold listings.
How can I identify Professor Oak's New Theory #101 with my phone?
Download the free TCGApp.io app (Card Value Scanner) on iPhone, point the camera at the card, and it matches Professor Oak's New Theory #101 from HeartGold & SoulSilver in seconds, then shows live prices, PSA graded values and eBay sold comps.
How do I track the value of Professor Oak's New Theory #101 in a collection?
Add Professor Oak's New Theory #101 to your collection in the TCGApp.io app to see portfolio value, profit and loss, price history and alerts when the card moves. You can also export CSV/JSON and add a Home Screen widget.
Most valuable cards in HeartGold & SoulSilver
HeartGold & SoulSilver card list · All Pokemon sets · Most valuable Pokemon cards
Scan any card, get its value in seconds
Point your iPhone camera at a card: live prices, PSA graded values and real eBay sold data. Free to try.