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1 other Professor Oak's New Theory printings exist — is this your card? HeartGold & SoulSilver 101/123 ↓
Professor Oak's New Theory — HeartGold & SoulSilver #101

UncommonHeartGold & SoulSilver101/1232010Illustrated by Ken Sugimori

Professor Oak's New Theory #101/123 HeartGold & SoulSilver Price

Raw · near mint

$0.75

Updated

Graded

  • PSA 10$5573×
  • PSA 9$2533×
Sales recorded
11
every grade, since 2024
Last 90 days
5 raw · 6 all
3 in the last 30, every grade
Confidence
Medium
Enough for a guide, not a guarantee.
Latest sale
18d ago
raw · any grade 12d ago
ViewingRaw / ungradedReverse Holo →

Bulk card. At this price most of what a buyer pays is postage, so treat it as a rough band rather than a valuation. An estimate, not an appraisal. How we price →

Worth grading?Simulate gradingCheck centeringCompareTrade itSelling fees

How Professor Oak's New Theory trades

A near-mint Professor Oak's New Theory is 60% cheaper than a year ago, when it was $1.88 (October 2025). It peaked at $1.93 in July 2025 and sits 61% below that high.

What's your copy worth?

Pick the holder and condition you have. How the grades are judged → How we price played copies →

Not sure which condition? Grade it from a photo →

What an ungraded copy has done.

Raw · latest

$1▼ 60%over 366 days

2025-10-03 → 2026-10-04

$1
$2
$2
3 OctDecJanFebMarAprMayJunJulAugSept4 Oct
Our recorded ungraded price for this card. The line closes on the Near Mint figure shown above — the chart and the headline are the same number by construction, never two. The line is the running level, so a single unusually cheap or dear sale does not spike it. Hover any day for its price on the line.

Copies for sale right now

Asking prices, not sales. Stock as of 2026-10-04T12:20:36.536Z.

Buy from here
TCGplayer$1ebay

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No live listings in our latest snapshot for this printing — the marketplaces above search it directly.

What the sales actually show

Range

$1 – $3

Raw — lowest to highest sale

Where it sells

100% eBay

Raw — last 90 days

Demand

56/100

Liquid — sales rate, trend & buzz

Market data

Across the markets

179% apart
  • TCGplayer$1
  • PriceCharting$1
  • Our raw sold median$2

Vendor prices for the same printing beside our own raw sold median — the same figure as the Raw row in the by-grade table. A wide gap is usually thin data on one side rather than an arbitrage; the headline is blended from sales, not from the cheapest of these.

Recent sales

The latest sales at each grade, newest first. Pick a grade.

Item soldGradeVenueDateCertificatePrice
Professor Oak's New Theory HeartGold SoulSilver 101/123 LP PokemonRaweBay2026-09-17—$2.19
Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon LPRaweBay2026-09-06—$2.49
Professor Oak's New Theory 101/123 Pokemon Uncommon HeartGold SoulSilver Card LPRaweBay2026-08-11—$0.89
Pokemon Professor Oak's New Theory HeartGold & SoulSilver 101/123 NMRaweBay2026-07-30—$2.00
PROFESSOR OAK'S NEW THEORY 101/123 HEARTGOLD & SOULSILVER Uncommon PokemonRaweBay2026-07-20—$2.79
Pokémon TCG Professor Oak's New Theory Heartgold Soulsilver 101/123 MP/HPRaweBay2026-05-06—$1.63

1–6 of 6 sales.

More Professor Oak's New Theory and more from HeartGold & SoulSilver

Prices are raw near mint; PSA 10 shown where we have one.