Cards › HeartGold & SoulSilver › #101
Professor Oak's New Theory - HeartGold & SoulSilver (#101)
- Number
- 101
- Illustrator
- Ken Sugimori
Professor Oak's New Theory - HeartGold & SoulSilver
Professor Oak's New Theory is a Uncommon Trainer card from the HeartGold & SoulSilver Pokémon TCG set, released 2010, illustrated by Ken Sugimori. It sits at card number 101 in the HeartGold & SoulSilver checklist and the Supporter subtype.
In collector terms, this is an uncommon card. Current TCGplayer market price tops out at $6.92 across 2 printed variants (Normal, Holofoil, Reverse Holo, etc.), with every variant's low / mid / high and direct prices listed below.
Professor Oak's New Theory has been printed 2 times across different sets. The variant you're looking at (#101 in HeartGold & SoulSilver) is one of them - see every other printing further down to compare art, rarity, and current market price across all versions.
CIV 73Strong
Strong market heat. Weak icon status.
30 / 90 / 365-day price momentum.
Cultural recognition + iconic-set bonus.
Release-window weight.
Prices USD 2 days ago · 2026-06-09 08:06 UTC
Where to buy on eBay 24 active listings · updated 278m ago
Market price history
Sale History 64 sales · since 2021-01-01
| Date | Grade | Price | Lot |
|---|---|---|---|
| RAW | $1.19 | ||
| RAW | $1.54 | ||
| RAW | $0.96 | ||
| RAW | $0.99 | ||
| RAW | $0.88 | ||
| RAW | $1.88 | ||
| RAW | $1.88 | ||
| RAW | $1.88 | ||
| RAW | $1.85 | ||
| RAW | $1.93 | ||
| RAW | $1.85 | ||
| RAW | $1.55 | ||
| RAW | $1.55 | ||
| RAW | $1.46 | ||
| RAW | $1.55 | ||
| RAW | $1.49 | ||
| RAW | $1.10 | ||
| RAW | $1.09 | ||
| RAW | $1.09 | ||
| RAW | $1.09 | ||
| RAW | $1.09 | ||
| RAW | $1.36 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.37 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.49 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.48 | ||
| RAW | $1.47 | ||
| RAW | $1.48 | ||
| RAW | $1.48 | ||
| RAW | $1.49 | ||
| RAW | $1.49 | ||
| RAW | $1.44 | ||
| RAW | $1.46 | ||
| RAW | $1.52 | ||
| RAW | $1.55 | ||
| RAW | $1.55 | ||
| RAW | $1.61 | ||
| RAW | $1.66 | ||
| RAW | $1.77 | ||
| RAW | $0.95 | ||
| RAW | $0.95 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.96 | ||
| RAW | $0.99 | ||
| RAW | $0.99 | ||
| RAW | $0.99 | ||
| RAW | $0.99 | ||
| RAW | $4.49 | ||
| RAW | $7.99 |
Other printings of Professor Oak's New Theory
Professor Oak's New Theory FAQ
Click any question to expand. Every answer pulls from this card's live Catchinary data.
How much is Professor Oak's New Theory from HeartGold & SoulSilver worth?
Recent recorded market price is $6.92 (latest tracked snapshot 2026-06-10) across 2 variants. See the variant breakdown above for per-variant low / mid / high / market spread and the market price history chart for the long-term arc. Graded estimates (PSA 10, PSA 9, CGC Perfect) are shown when auction data is available.
How rare is Professor Oak's New Theory?
This printing is an uncommon card (the card is labeled "Uncommon" on the checklist). Professor Oak's New Theory has been printed 2 times across different sets - earlier or limited printings often command premiums even when the rarity tier is identical.
Who illustrated Professor Oak's New Theory?
Ken Sugimori illustrated this card. See Ken Sugimori's full Catchinary page for every Pokémon card they've drawn, grouped by set with current market prices, career stats, and alt-art highlights.
When was Professor Oak's New Theory released?
The HeartGold & SoulSilver set released in 2010, so this card (#101 in the set) has been available since then. Its current and historical market price is tracked above.
Where can I buy Professor Oak's New Theory?
The "Where to buy on eBay" panel above shows live listings. For long-term holds, consider graded copies (PSA / CGC) which trade separately and usually at a premium over raw.
Is this card in Standard format?
Legal formats rotate as new sets release - see the HeartGold & SoulSilver set page for current Standard / Expanded / Unlimited status. Catchinary tracks 0 cards across every English-language set, so if this one has rotated out there's almost certainly a current-format reprint you can check.