Koffing #109 PSA 10: price & population
PSA 10
$199.50
Raw
$1.89
PSA 10 pop
73
Gem rate
34.1%
A PSA 10 Koffing #109 from Japanese Rocket Gang sells for $199.50 — a 10,456% premium over the $1.89 raw price. PSA has graded this card 214 times; 73 came back a 10 (34.1% gem rate), and 82 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $24.99. The jump from 9 to 10 is worth $174.51 — 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.
