Professor's Research
SetSWSH Black Star Promos
Year2019
RarityPromo
Number#SWSH178
Ungraded
$4.97+$2.48
51 sales · last Jul 20, 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 52 recorded sales for this card across 2 grade tiers, 0 of them in the last 90 days. PSA 9 copies have a 90-day median of $2.25. Ungraded copies currently trade around $4.97. The highest sale on record is $19.99 (Ungraded, Jul 15, 2026). 20 listings are live right now with asks from $0.99.
Price history
Grading premium
Median graded price vs. the ungraded copy ($4.97) — a rough read on whether grading pays off.
PSA 9
0.5×
$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 | 4mo ago | $0.99↗ |
| Professor's Research SWSH178 Pokémon GO Black Star Promos Holo Pokémon 2022 LP pokecasu | eBay | 4mo ago |
Recent sales
| Date | Grade | Title | Sold on | Price |
|---|---|---|---|---|
| Jul 20, 2026 | Ungraded | Professor's Research SWSH178 - Black Star Promo - Pokémon TCG - NM↗ | eBay | $4.97 |
| Jul 19, 2026 | Ungraded | Professor's Research Pokemon GO SWSH178 Holo Black Star Promo NM↗ | eBay | $1.99 |
| Jul 15, 2026 | Ungraded | Professors Research SWSH178 Professor Willow↗ | eBay | $19.99 |
| Jul 12, 2026 | Ungraded | Professor's Research Holo Promo SWSH: Sword & Shield Promo Cards SWSH178 NM↗ | eBay |
