![Brock's Golem [1st Edition] #20 from Pokemon Gym Heroes](https://images.pokemontcg.io/gym1/20.png)
Brock's Golem [1st Edition] #20 PSA 10: price & population
PSA 10
$452.51
Raw
$24.99
PSA 10 pop
62
Gem rate
22.1%
A PSA 10 Brock's Golem [1st Edition] #20 from Gym Heroes sells for $452.51 — a 1,711% premium over the $24.99 raw price. PSA has graded this card 280 times; 62 came back a 10 (22.1% gem rate), and 132 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $49.00. The jump from 9 to 10 is worth $403.51 — 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.
