Professor Oak's Research
Expedition Base Set · #149/165 · Uncommon · 2002
Printings & price history
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Graded values
Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.
PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.
Graded population census · updated 2026-09-17
Population data from PriceCharting, updated monthly.
How much is Professor Oak's Research #149/165 worth?
Right now (September 25, 2026) the going rate for an ungraded Professor Oak's Research #149/165 from Expedition Base Set is about $2.03. Across the 2 printings we track, copies run anywhere from $0.86 to $379.94 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $267.50, roughly 131.8x the raw price, while a PSA 9 sits near $30.50. 98 copies have been graded to date, and 21% 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.
