Prices updated 8/5/2026
Professor Oak's Research
Expedition Base Set · #149
Set
Expedition Base Set
Series
E-Card
Rarity
Uncommon
Number
149
Supertype
Trainer
Artist
Ken Sugimori
Subtypes
Supporter
Prices & Marketplace
TCGPlayer (NM market)
referenceNormal
low $0.50 · high $6.20$1.75
Reverse Holofoil
low $14.54$29.98
Buy on eBay
active asks · just noweBayPSA 10
Lowest $1,000
1 active listing
eBayPSA 9
Lowest $50.00· Median $130
5 active listings
eBayPSA 7
Lowest $27.19· Median $49.99
2 active listings
eBayCGC 10
Lowest $79.99
1 active listing
eBayRaw / Ungraded
Lowest $0.99· Median $3.00
190 active listings·43% below market
Recent sales
by gradeReal sold prices — what buyers actually paid, not an estimate.
Sold-price data from Silph Co Analytics. Outliers excluded.
Price History
2 price points-5.9% ($-0.11)
Apr 5$1.75 – $1.86Aug 5
Listings by grade
The cheapest copy listed on eBay at each grade right now — what the slab is worth paying for.
| Grade | Lowest ask | Listed | |
|---|---|---|---|
| PSA 10 | $1,000 | 1 | Listings → |
| PSA 9 | $50.00 | 5 | Listings → |
| PSA 8 & under | $27.19 | 2 | Listings → |
| CGC 9.5+ | $79.99 | 1 | Listings → |
| Raw / Ungraded | $0.99 | 190 | Listings → |
These are current asking prices, not sold prices — a grade with one optimistic listing can look far pricier than it trades for. Recent sold comps are below.
