Brock's Training Method #106 PSA 10: price & population
PSA 10
$91.08
Raw
$1.99
PSA 10 pop
8
Gem rate
17.4%
A PSA 10 Brock's Training Method #106 from Gym Heroes sells for $91.08 — a 4,477% premium over the $1.99 raw price. PSA has graded this card 46 times; 8 came back a 10 (17.4% gem rate), and 17 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $8.50. The jump from 9 to 10 is worth $82.58 — 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.
