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Uncommon✦ Foil
Professor Oak's New Theory
HeartGold & SoulSilver · #101
$6.92latest TCGplayer median
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Price history
Price history (TCGplayer median, ~180 days)
Graded prices
About Professor Oak's New Theory #101's market value
Professor Oak's New Theory #101 (Reverse Holofoil, Uncommon) from HeartGold & SoulSilver (2010) has a market price of $6.92 raw as of August 30, 2026, the TCGplayer market price for this exact printing. For context, the median HeartGold & SoulSilver card is $7.09; this one ranks #118 of 229 priced printings. Over the last 30 days the price has held steady (+0.0%).
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