Professor Oak's New Theory
What's your copy worth?
What this price is based on
Low confidenceOnly 0 sales in the last 90 days.
Recent CGC 0.5 sales
- May 13, 2026Fanatics$5.00
- Apr 19, 2026Fanatics$5.00
- Feb 10, 2026Fanatics$41.00
- Feb 9, 2026Fanatics$36.00
From 4 completed sales recorded between Feb 9, 2026 and May 13, 2026. Sold prices only — asking prices are never counted. The range is wide because these sales span different printings and conditions — 1st Edition, Shadowless and Unlimited copies all carry this card's name, and they trade at very different levels. Each sale above is labelled with what its listing claimed, so you can see which ones describe the same object. Treat the median as the typical copy, not the range.
Grade it or not
NOT WORTH ITBased on 4 graded sales and 1,305,862 pop-report entries for a near-mint copy.
See the numbers — Trader plan and aboveBuy this card
✨ Is it worth it?
An AI market read of this card — value, momentum, grading economics, liquidity. It lays out the data; you decide.
Professor Oak's New Theory is a Uncommon Pokémon card from HeartGold & SoulSilver (#101), illustrated by Ken Sugimori. It's a Supporter Trainer card. Its current blended market value is $0.86 ungraded, with a PSA 10 worth around $55 — a gem-mint grading premium of roughly 64× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 20 August 2026.
The receipts
Price history · Raw
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Recent sold prices
No recent sold listings tracked.
Should you grade it?
Expected return across every likely grade, after fees — the realistic average, not the best case. Only 10.5% of copies gem (PSA 10 best case −$17); most land at PSA 9 or below.
The odds
Professor Oak's New Theory is a Uncommoncard — a guaranteed slot in every pack, not a rarity gamble, so there's no pull-odds figure for it.
Estimates only. Pack odds come from CardTrack's pack model (the same one behind the pack simulator) — not an official rate. Grading odds are the real cumulative PSA population, which skews toward nicer, resubmitted copies, so it overstates the true first-submission gem rate. Full grade-by-grade breakdown below.
Grade-by-grade ROI & risk-adjusted outcomesNet vs raw per target grade, plus the probability-weighted distribution
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $54.79 | $71 | −$17 | 63.7× |
| PSA 9 | $25.00 | $70 | −$46 | 29.1× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 57 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 10.5% | $55.00 |
| PSA 9 | 24.6% | $25.00 |
| PSA ≤8 | 64.9% | $1.00 |
Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.
Population across gradersPSA, CGC & BGS — every grade, with gem rates
Only 0% of 2 PSA-graded Professor Oak's New Theory copies are a gem-mint 10 (0 of 2) — the rest grade lower.
Real graded population from PSA, CGC & BGS — a lower gem rate means a Professor Oak's New Theory 10 is harder to pull.
Copies for sale right now
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All grades & conditions
Every grade we pricePSA / CGC / BGS ladder with per-grade population
| Grade | Relative value | Price |
|---|---|---|
| PSA 10 | $55$55–$55 | |
| PSA 9pop 1 | $25$25–$25 | |
| PSA 7pop 1 | $3$3–$3 |
Raw condition ladderNM → damaged, with real sold medians where we have them
Price by printingBase vs reverse holo vs 1st edition — priced separately
Price by variant
TCGplayer market price per printing — reverse holo, 1st edition and unlimited often differ sharply.
Market dataCross-market spread, EU price, momentum & community buzz
Cross-market prices
34% spreadCurrently 34% cheaper on TCGplayer than PriceCharting. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.
Market signal
Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.
🇪🇺 Cardmarket price · Europe
64% cheaper than the USCard textAttacks, abilities, weakness / resistance / retreat
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Card detailsSet, rarity, artist, Pokédex & specs
Other Professor Oak's New Theory cards
There are 2 different Professor Oak's New Theory printings — make sure you're valuing the right one. This is HeartGold & SoulSilver #101 (Uncommon).
More from HeartGold & SoulSilver
Frequently asked questions
How much is Professor Oak's New Theory (HeartGold & SoulSilver #101) worth?
As of 20 August 2026, Professor Oak's New Theory from HeartGold & SoulSilver is worth approximately $0.86 ungraded (near-mint), and around $55 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.
What is the PSA 10 price for Professor Oak's New Theory?
A PSA 10 (gem mint) Professor Oak's New Theory from HeartGold & SoulSilver is worth around $55 — roughly 64× the raw ungraded value of $0.86.
Should I grade my Professor Oak's New Theory?
A PSA 10 sells for about $55 versus $0.86 raw — roughly a 64× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.
Is Professor Oak's New Theory rare?
Professor Oak's New Theory is a Uncommon card from HeartGold & SoulSilver (card #101), illustrated by Ken Sugimori. Its current blended market value is $0.86 ungraded.
Cite & embed this card
Free to use with attribution to CardTrack.
Professor Oak's New Theory (HeartGold & SoulSilver #101) — Pokémon market value $0.86, PSA 10 $54.79. Source: CardTrack, https://cardtrack.com/pokemon/card/heartgold-soulsilver/professor-oak-s-new-theory-101<iframe src="https://cardtrack.com/embed/card?id=hgss1-101" width="100%" height="160" style="border:0;max-width:460px" title="Professor Oak's New Theory price — CardTrack" loading="lazy"></iframe>
<p style="font:12px system-ui">Source: <a href="https://cardtrack.com">CardTrack</a></p>