Koga's Grimer #78 PSA 10: price & population
PSA 10
$57.54
Raw
$1.81
PSA 10 pop
20
Gem rate
32.3%
A PSA 10 Koga's Grimer #78 from Gym Challenge sells for $57.54 — a 3,079% premium over the $1.81 raw price. PSA has graded this card 62 times; 20 came back a 10 (32.3% gem rate), and 21 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $22.00. The jump from 9 to 10 is worth $35.54 — 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.
