Professor Oak's New Theory

HeartGold & SoulSilver · No. 101/123

Uncommon EN Trainer

Current value

$0.71

TCGplayer Near Mint

Prices

Variant	TCGplayer	Cardmarket
Normal	$0.71 Low $0.25 · High $20.00	€0.30
Reverse Holofoil	$6.99 Low $4.00 · High $62.80	€2.74

TCGplayer prices are Near Mint market averages, Cardmarket prices are 30-day averages in EUR. Refreshed every 15 minutes, as of Oct 31, 2026, 1:32 AM UTC.

Details

Rarity

Uncommon

Artist

Ken Sugimori

Number

101/123

Expansion

HeartGold & SoulSilver

Series

HeartGold & SoulSilver

Subtypes

Supporter

Price history

TCGplayer Cardmarket

$0.71 $0.00 (0.0%)

$0.65 $0.70 $0.75 $0.80

Oct 24 Oct 26 Oct 27 Oct 29 Oct 30

Normal · TCGplayer Near Mint · last 7 days, average price by day

Date	Average
Oct 24, 2026	$0.71
Oct 25, 2026	$0.71
Oct 26, 2026	$0.71
Oct 27, 2026	$0.71
Oct 28, 2026	$0.71
Oct 29, 2026	$0.71
Oct 30, 2026	$0.71

7D 1M 3M 6M 1Y

Normal Reverse Holofoil

Where to buy

TCGplayer Search Professor Oak's New Theory on TCGplayer Cardmarket Search Professor Oak's New Theory on Cardmarket eBay Search Professor Oak's New Theory on eBay

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Professor Oak's New Theory is card 101/123 of HeartGold & SoulSilver, a HeartGold & SoulSilver series English Pokémon TCG expansion. Prices and price history here come from TCGplayer and Cardmarket and refresh every 15 minutes, and you can scan and track your HeartGold & SoulSilver cards in the Arca TCG app.