Professor Oak's New Theory

#068NormalJapanese cardUpdated Sep 24, 2026

TCGPlayer market

$1.01

Finish

Market prices

Ungraded prices from each marketplace we track, with sales activity where available.

SourcePriceSalesLast salePer weekSignal

TCGPlayer Market USD

$1.01

TCGPlayer Market

USD

$1.01

—

eBay Average USD

$1.98

eBay Average

USD

$1.98

—

eBay Sold USD

$2.00

1 sales

eBay Sold

USD

$2.00

1

—

Average sold price by grading company and grade.

GradeAverage sold price

Grader	10	9
PSA	$41.40	$8.061 sold

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Professor Oak's New Theory is a Japanese Pokémon card (#068) from HeartGold Collection, part of the LEGEND series, released in 2009.

An ungraded copy currently sells for about $1.01. A PSA 10 (Gem Mint) averages $41.40 — about 41.0× the raw price.

PokiFrame tracks Professor Oak's New Theory across TCGPlayer, Cardmarket and eBay sales so you can check its value before you buy, sell or trade.

How much is Professor Oak's New Theory worth?: Professor Oak's New Theory from HeartGold Collection has a market price of $1.01 for an ungraded copy, based on current TCGPlayer and eBay sales data. Condition, print variant and grading all move that number.
What is a PSA 10 Professor Oak's New Theory worth?: Recent PSA 10 (Gem Mint) sales of Professor Oak's New Theory averaged $41.40, about 41.0× the ungraded price. A PSA 9 averaged $8.06.

Market

$9.10