Koraidon #91 PSA 10: price & population
PSA 10
$595.20
Raw
$3.99
PSA 10 pop
12
Gem rate
31.6%
A PSA 10 Koraidon #91 from Promo sells for $595.20 — a 14,817% premium over the $3.99 raw price. PSA has graded this card 38 times; 12 came back a 10 (31.6% gem rate), and 17 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $17.26. The jump from 9 to 10 is worth $577.94 — 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.