Koffing #243 PSA 10: price & population
PSA 10
$449.50
Raw
$29.02
PSA 10 pop
650
Gem rate
28.8%
A PSA 10 Koffing #243 from Cosmic Eclipse sells for $449.50 — a 1,449% premium over the $29.02 raw price. PSA has graded this card 2,260 times; 650 came back a 10 (28.8% gem rate), and 1,146 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $67.69. The jump from 9 to 10 is worth $381.81 — 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.
