Prices updated 4/5/2026
Professor's Research — PSA 8
SWSH Black Star Promos · #SWSH152
Set
SWSH Black Star Promos
Series
Sword & Shield
Rarity
Promo
Number
SWSH152
Supertype
Trainer
Artist
Yuu Nishida
Subtypes
Supporter
Prices & Marketplace
PSA 8 · cheapest right now
live eBay asks$33.71
cheapest of 2 PSA 8 listings for Professor's Research
See PSA 8 listings on eBay →Asking prices, not sold prices. Condition is settled by the grade, but always check the listing.
TCGPlayer (NM market)
referenceNormal
low $1.99$2.75
Holofoil
low $1.99$2.75
Buy on eBay
active asks · 4d agoeBayPSA 9
Lowest $29.99· Median $40.00
6 active listings
eBayPSA 8
Lowest $33.71· Median $34.00
2 active listings
eBayCGC 10
Lowest $60.00· Median $305
2 active listings
eBayCGC 9.5
Lowest $20.00· Median $35.33
2 active listings
eBayCGC 9
Lowest $9.75· Median $15.00
7 active listings
eBayOther Graded
Lowest $87.69
1 active listing
eBayRaw / Ungraded
Lowest $2.50· Median $6.88
116 active listings·9% below market
View all 137 listings on eBay →Recent sales
by gradeReal sold prices — what buyers actually paid, not an estimate.
Sold-price data from Silph Co Analytics. Outliers excluded.
Price History
Not enough data yet
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 9 | $29.99 | 6 | Listings → |
| PSA 8 & under | $33.71 | 2 | Listings → |
| CGC 9.5+ | $20.00 | 4 | Listings → |
| CGC 9 & under | $9.75 | 7 | Listings → |
| Raw / Ungraded | $2.50 | 116 | 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.
