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Professor Oak's Research 149/165 Expedition Base Set

EXPEDITION BASE SET

Professor Oak's Research 149/165

Professor Oak's Research is card 149/165 in Expedition Base Set (EX), a E-Card set, released on September 15, 2002. It’s an Uncommon illustrated by Ken Sugimori. It comes in 2 printings: Normal and Reverse Holo. A Near Mint Normal copy has a market price of $2.22 as of October 17, 2026, up 17% over 30 days.

Market price · Near Mint · Normal

$2.22+17% in 30 days

Jul 19, 2026 · $1.82Low $1.82 · High $2.27Oct 17, 2026 · $2.22

As of October 17, 2026. Prices are estimates from third-party market data and are not offers to buy or sell. Holo10 in the Holofile app adds 6-month, 1-year and all-time charts.

Number
149/165
Rarity
Uncommon
Released
September 15, 2002

Printings and prices

Normal

Ungraded
ConditionMarket30 days
Near Mint$2.22+17%
Lightly Played$1.23−5%
Moderately Played$1.150%
Heavily Played$0.78+4%
Damaged$0.540%
Graded
GradeMarket30 days
PSA 10$271.140%
PSA 9$33.18+1%
PSA 8$13.000%
PSA 6$7.500%
CGC 10 Pristine$86.40
CGC 10$41.490%
CGC 9$8.09+2%
SGC 9.5$10.090%

Reverse Holo

Ungraded
ConditionMarket30 days
Near Mint$34.84+7%
Lightly Played$14.90−2%
Moderately Played$6.310%
Damaged$5.000%
Graded
GradeMarket30 days
PSA 10$200.000%
PSA 9$70.85−29%
PSA 8$17.68−4%
PSA 7$23.57+4%
CGC 10 Pristine$220.32+2%
CGC 10$214.97+72%
CGC 9$15.000%
CGC 8.5$36.00

Market prices as of October 17, 2026: in US dollars unless marked. Prices are estimates from third-party market data and are not offers to buy or sell.