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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 $1.66. 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 1d ago

$1.66Raw Market PriceAverage of the last 5 raw sold listings on eBay and TCGplayer

Avg Last 5 Sold

$2.38

eBay Raw

$0.93

TCGplayer Raw

Source
Variant
Grader
Grade
TitlePriceVariantGraderGradeSold
PROFESSOR OAK'S NEW THEORY 101/123 HEARTGOLD & SOULSILVER Uncommon Pokemon$2.79 USDRaw--7/20/2026
Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon NM$1.99 USDRaw--7/17/2026
Professor Oak's New Theory HeartGold SoulSilver 101/123 Pokemon Card$1.99 USDRaw--7/17/2026
Professor Oak's New Theory 101/123 Heartgold & Soulsilver Reverse Holo MP$3.99 USDRaw--7/15/2026
Pokemon Karte Heartgold Soulsilver Nr. 101/123 Professor Oak's New Theory engl.$1.14 USDRaw--7/14/2026
Professor Oak's New Theory 101/123 Reverse Holo Pokemon HGSS MP$3.99 USDRaw--7/12/2026
Professor Oak's New Theory 101/123 Reverse Holo$3.99 USDRaw--7/12/2026
Professor Oak's New Theory 101/123 HeartGold & SoulSilver Reverse Holo Pokémon$3.99 USDRaw--7/12/2026
Professor Oak's New Theory 101/123 Heartgold & Soulsilver Reverse Holo$1.99 USDRaw--7/12/2026
Professor Oak's New Theory 101/123 Heartgold & Soulsilver Reverse Holo MP$0.99 USDRaw--7/11/2026

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