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Sets/hgss1/Professor Oak's New Theory

Professor Oak's New Theory

TrainerSupporterUncommon

Set: hgss1 · #101

Artist: Ken Sugimori

Professor Oak's New Theory

Grading ROI & Alerts

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Professor Oak's New Theory is a uncommon card from hgss1 (#101). It was illustrated by Ken Sugimori.

Recent raw sales average $1.06. Below you'll find the full sold-listing history, PSA population data, and a grading ROI breakdown showing what each PSA grade is worth versus a raw copy.

Updated 22h ago

$1.06Raw Market PriceAverage of the last 5 raw sold listings on eBay and TCGplayer

Avg Last 5 Sold

$1.20

eBay Raw

$0.93

TCGplayer Raw

Source
Variant
Grader
Grade
TitlePriceVariantGraderGradeSold
HeartGold SoulSilver Professor Oak's New Theory 101/123 LP$0.99 USDRaw--8/27/2026
HeartGold SoulSilver Professor Oak's New Theory 101/123 LP$0.99 USDRaw--8/27/2026
HeartGold SoulSilver Professor Oak's New Theory 101/123 LP$0.99 USDRaw--8/27/2026
HeartGold SoulSilver Professor Oak's New Theory 101/123 LP$0.99 USDRaw--8/27/2026
Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon LP$2.03 USDRaw--8/20/2026
Professor Oak's New Theory - (League Promo) 101/123 Crosshatch Holo CGC Gem 10$89.99 USDGraded--8/14/2026
Professor Oak's New Theory 101/123 Pokemon Uncommon HeartGold SoulSilver Card LP$0.90 USDRaw--8/11/2026
Professor Oak's New Theory 101/123 Reverse Holo HeartGold SoulSilver (2010) LPMP$5.09 USDRaw--8/10/2026
Pokemon Professor Oak's New Theory 101/123 Heartgold Soulsilver Reverse Holo LP$1.99 USDRaw--8/2/2026

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