Professor Oak's New Theory #101 Pokemon HeartGold & SoulSilver

Professor Oak's New Theory 101/123 price – sold and for sale
Sold
Excellent€0.50
| Date | Lang | Source | Price |
|---|---|---|---|
| 6d ago | CardMarket | €0.15 |
Light Played€0.11
| Date | Lang | Source | Price |
|---|---|---|---|
| 1w ago | CardMarket | €0.05 |
Played€0.13
| Date | Lang | Source | Price |
|---|---|---|---|
| 1w ago | CardMarket | €0.15 |
Current listings
Near Mint€0.25
| Date | Lang | Source | Price |
|---|---|---|---|
| Active | CardMarket | €0.25 |
Excellent€0.02
| Date | Lang | Source | Price |
|---|---|---|---|
| Active | CardMarket | €0.02 |
Good€0.02
| Date | Lang | Source | Price |
|---|---|---|---|
| Active | CardMarket | €0.02 |
Light Played€0.05
| Date | Lang | Source | Price |
|---|---|---|---|
| Active | CardMarket | €0.05 |
Played€0.05
| Date | Lang | Source | Price |
|---|---|---|---|
| Active | CardMarket | €0.05 |
Poor€0.05
| Date | Lang | Source | Price |
|---|---|---|---|
| Active | CardMarket | €0.05 |
Card Information
- Pokemon
- Professor Oak's New Theory
- Number
- #101 / 123
- Set
- HeartGold & SoulSilver
- Rarity
- Uncommon
- Retreat
- 0
- Illustrator
- Ken Sugimori
Market price overview for Professor Oak's New Theory #101 from HeartGold & SoulSilver
Current pricing
Professor Oak's New Theory — part of the HeartGold & SoulSilver set — currently fetches €0.05 for a Good condition copy, with 89 copies currently available across Europe. Collectors seeking Near Mint quality will pay closer to €0.30.
Price trend (vs 30-day average)
The price has dropped about 90% from the 30-day average, which may indicate reduced demand or increased supply.
Demand & supply
Over the past 30 days, Professor Oak's New Theory sold on 23 separate days — indicating high demand, and a total of 89 copies are currently listed for sale.
Price history (90 days)
Right now, Professor Oak's New Theory is trading at the lower end of its price ladder. Over 90 days: €0.02 to €0.51.
Prices by condition
MT costs €0.57 versus €0.05 for PO. Budget-conscious buyers can save significantly by choosing the right condition.
Buy or sell?
The price trend is pointing downward, which could mean a good buying opportunity for Professor Oak's New Theory.






