Koga's Koffing #79 PSA 10: price & population
PSA 10
$57.25
Raw
$1.99
PSA 10 pop
21
Gem rate
28.8%
A PSA 10 Koga's Koffing #79 from Gym Challenge sells for $57.25 — a 2,777% premium over the $1.99 raw price. PSA has graded this card 73 times; 21 came back a 10 (28.8% gem rate), and 34 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $14.75. The jump from 9 to 10 is worth $42.50 — 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.
