Professor's Research
SetSWSH Black Star Promos
Year2019
RarityPromo
Number#SWSH178
Ungraded
$1.99
46 sales · last Jul 8, 2026
PSA 9
$2.25
1 sales · last Apr 28, 2026
Professor's Research price guide
Professor's Research is a collectible Pokémon card from the SWSH Black Star Promos expansion (2019). Setlot tracks 47 recorded sales for this card across 2 grade tiers, 46 of them in the last 90 days. PSA 9 copies have a 90-day median of $2.25. Ungraded copies currently trade around $1.99. The highest sale on record is $9.99 (Ungraded, May 8, 2026). 20 listings are live right now with asks from $0.99.
Price history
Grading premium
Median graded price vs. the ungraded copy ($1.99) — a rough read on whether grading pays off.
PSA 9
1.1×
$2.25
Live listings
Search on eBay ↗Lowest asks per grade. Older listings may have ended — “seen” is when we last confirmed each one.
| Grade | Listing | Marketplace | Seen | Price |
|---|---|---|---|---|
| Ungraded 20 tracked | Pokemon Professor's Research SWSH178 NM Black Star Promo (1) (Professor Willow) andruidus | eBay | 1mo ago | $0.99↗ |
| Professor's Research SWSH178 Pokémon GO Black Star Promos Holo Pokémon 2022 LP pokecasu | eBay | 1mo ago |
Recent sales by grade· last 90 days
| Grade | Sold | Median | Range |
|---|---|---|---|
| Ungraded | 45 | $1.99 | $0.99 – $9.99 |
| PSA 9 | 1 | $2.25 | $2.25 |
Recent sales
| Date | Grade | Title | Sold on | Price |
|---|---|---|---|---|
| Jul 8, 2026 | Ungraded | Professor's Research SWSH178 Black Star Promo Holo SEALED Pokemon Card English↗ | eBay | $8.00 |
| Jul 3, 2026 | Ungraded | Professor's Research - (with Pokemon Go Code) SWSH178 SWSH: Sword & Shield Promo↗ | eBay | $5.00 |
| Jul 1, 2026 | Ungraded | Professor's Research SWSH178 Holo Promo Sword & Shield Promo Pokemon Holo NM↗ | eBay | $1.49 |
| Jun 30, 2026 | Ungraded | SWSH178 - Holographic - Professor's Research - Holo Rare - Promo - NM/M↗ |
