Pokémon TCG · HeartGold Collection · Japanese · #68
Professor Oak's New Theory #68 (Japanese) price
HeartGold Collection68Market prices
90-day range · Cardmarket
Professor Oak's New Theory (#68, Uncommon) is a card from the Japanese Pokémon set HeartGold Collection. Near Mint, it has a market price of about $1.00 on TCGplayer and €0.89 on Cardmarket (updated September 23, 2026). Over the last 7 days, its TCGplayer market price rose 0.0% and the Cardmarket price trend rose 0.0%. Over the last 30 days, its TCGplayer market price rose 0.0% and the Cardmarket price trend rose 0.0%. Over the last 90 days, its TCGplayer market price rose 0.0% and the Cardmarket price trend rose 3.5%. Its 90-day TCGplayer market price range is $1.00 to $1.00. Its 90-day Cardmarket price trend range is €0.86 to €0.93. Graded, a PSA 10 is worth about $74.60 and a PSA 9 about $8.00. Among the 31 Uncommon cards of HeartGold Collection, it is the 30th most valuable.
Professor Oak's New Theory #68 prices by finish
| Finish | TCGplayer | Cardmarket |
|---|---|---|
| 1st Edition | $1.00 | €0.89 |
Near Mint prices: TCGplayer market price, Cardmarket price trend, updated September 23, 2026.
Price changes by finish
| Finish | Price | 7 days | 30 days | 90 days | 90-day range |
|---|---|---|---|---|---|
| 1st Edition | TCGplayer market price | +0.0% | +0.0% | +0.0% | $1.00 – $1.00 |
| 1st Edition | Cardmarket price trend | +0.0% | +0.0% | +3.5% | €0.86 – €0.93 |
Change of the same Near Mint price (same market, same finish) against 7, 30 and 90 days ago; range: its lowest and highest daily value over the last 90 days. Only where the price history supports a figure; lowest listings have none.
Follow your own copies, graded or raw, and what they are worth in Sparkl.
Professor Oak's New Theory #68 graded prices
| Grade | PSA | BGS | CGC | SGC |
|---|---|---|---|---|
| 10 | $74.60 | $107.00 | $50.00 | $50.00 |
| 9 | $8.00 | – | – | – |
US dollars, from recent graded sales and graded market prices.
Professor Oak's New Theory #68 price history
About this card
- Number
- 68
- Rarity
- Uncommon
- Finishes
- 1st Edition
- Rank in its rarity
- 30th of 31 Uncommon cards
- Against its rarity’s median
- 0.4× the median ($2.28)
- Cardmarket vs TCGplayer
- −0.2% after conversion ($1.1208 per euro)
- Released
- October 9, 2009
- Print language
- Japanese
How this page is made: Near Mint prices from TCGplayer and Cardmarket, refreshed daily; ranks, medians and comparisons are computed by Sparkl from those prices.
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Most valuable HeartGold Collection cards
- Ho-Oh Legend#16 · Rare Holo LEGEND · $79.99
- Ho-Oh Legend#15 · Rare Holo LEGEND · $74.15
- Totodile (Mirror Holofoil)#22 · Common · $59.99
- Ho-Oh Legend (Mirror Holofoil)#16 · Rare Holo LEGEND · $55.00
- Arcanine#14 · Holo Rare · $48.97
- Blissey (Mirror Holofoil)#54 · Super Rare Holo · from $50.00
The 10 most valuable · See all 142 cards in HeartGold Collection
Next to Professor Oak's New Theory #68 in HeartGold Collection
- Pokemon Reversal#65 · Uncommon · $2.00
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- Poke Ball (Mirror Holofoil)#66 · Uncommon · $2.00
- Fighting Energy#77 · Common · $12.00