Professor's Research
SetBrilliant Stars
Year2022
RarityRare Holo
Number#147
Ungraded
$1.50+$0.18
14 sales · last Jun 13, 2026
PSA 9
$14.00
1 sales · last Apr 12, 2026
Professor's Research price guide
Professor's Research is a collectible Pokémon card from the Brilliant Stars expansion (2022). Setlot tracks 15 recorded sales for this card across 2 grade tiers, 12 of them in the last 90 days. PSA 9 copies have a 90-day median of $14.00. Ungraded copies currently trade around $1.50. The top grade commands 9.3× the ungraded price — grading meaningfully changes what this card is worth. The highest sale on record is $14.00 (PSA 9, Apr 12, 2026). 41 listings are live right now with asks from $0.99.
Price history
Grading premium
Median graded price vs. the ungraded copy ($1.50) — a rough read on whether grading pays off.
PSA 9
9.3×
$14.00
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 41 tracked | Pokemon - Professor’s Research 147/172 Holo Rare - Brilliant Stars - NM/M - New kstamps-2015 | eBay | 1mo ago | $0.99↗ |
| Pokemon - Professor's Research - Brilliant Stars 147/172 - Non Holo NM Build and tonewyork50 | eBay | 1mo ago |
Recent sales by grade· last 90 days
| Grade | Sold | Median | Range |
|---|---|---|---|
| Ungraded | 12 | $1.50 | $0.99 – $6.04 |
Recent sales
| Date | Grade | Title | Sold on | Price |
|---|---|---|---|---|
| Jun 13, 2026 | Ungraded | Professor's Research (Professor Rowan) - 147/172 - Holo Rare - Near Mint↗ | eBay | $1.50 |
| Jun 11, 2026 | Ungraded | Professor's Research Professor Rowan 147/172 Brilliant Stars 2022 English Revers↗ | eBay | $0.99 |
| Jun 7, 2026 | Ungraded | Pokemon TCG Brilliant Stars: Professor's Research HOLO 147/172↗ | eBay | $1.39 |
| Jun 6, 2026 | Ungraded | Professor's Research 147/172 2022 Pokemon World Championships Brilliant Stars C↗ |
