![Professor's Research [Holo] #147 from Pokemon Brilliant Stars](https://images.pokemontcg.io/swsh9/147.png)
Professor's Research [Holo] #147 PSA 10: price & population
PSA 10
$69.79
Raw
$1.35
PSA 10 pop
1
Gem rate
6.2%
A PSA 10 Professor's Research [Holo] #147 from Brilliant Stars sells for $69.79 — a 5,070% premium over the $1.35 raw price. PSA has graded this card 16 times; 1 came back a 10 (6.2% gem rate), and 8 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $14.00. The jump from 9 to 10 is worth $55.79 — that spread, times your real odds of the 10, is what decides whether grading pays.
Prices from real completed sales, updated daily. Population data from PSA's public population report.
