Professor Oak's Research

Expedition Base Set · #149/165 · Uncommon · 2002

$29.98

Reverse Holofoil · Market price ▲ 0.0% (30d)

Prices as of Jul 26, 2026

Normal Reverse Holofoil

SupporterArt · Ken Sugimori

274graded pop

22%gem rate

1.9×PSA 10 vs raw

-60%off ATH $4.95 · Jan 2021

−$19.00EV to grade — don't

Printings & price history

Reverse Holofoil▲ 0.0% 7d$29.98

Low $14.54Mid $29.23

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Graded values

updated 2026-07-26

Grade 6 est.$11.82

Grade 5 est.$9.95

Grade 4 est.$8.21

Grade 3 est.$6.84

Grade 2 est.$5.60

Grade 1 est.$4.73

Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.

Reverse Holofoil · PSA 10 price history$96.00

PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-07-07

Reverse Holofoil

PSA78 graded · 9 gem 10

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CGC44 graded · 11 gem 10

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Population data from PriceCharting, updated monthly.

How much is Professor Oak's Research #149/165 worth?

Right now (July 27, 2026) the going rate for an ungraded Professor Oak's Research #149/165 from Expedition Base Set is about $1.78. Across the 2 printings we track, copies run anywhere from $0.50 to $380.00 depending on the version you're holding.

Grading changes the math on this one: a PSA 10 is valued around $55.95, roughly 31.4x the raw price, while a PSA 9 sits near $30.50. 91 copies have been graded to date, and 23% of them came back a 10 — worth knowing before you pay grading fees.

Prices on this page refresh nightly from live TCGplayer market data and are cross-checked against actual sold prices, so a single inflated listing never becomes "the price". The chart above has the full history.