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Uncommon✦ Foil
Professor Oak's New Theory
HeartGold & SoulSilver · #101
$6.96latest TCGplayer median
Card details
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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 $6.96 raw as of September 20, 2026, the TCGplayer market price for this exact printing. For context, the median HeartGold & SoulSilver card is $7.50; this one ranks #121 of 229 priced printings. Over the last 30 days the price has held steady (+0.6%). Its 180-day range is $6.92 to $6.96 — it is trading near the top of that range.
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