![Koffing [Reverse Holo] #50 from Pokemon Evolutions](https://images.pokemontcg.io/xy12/50.png)
Koffing [Reverse Holo] #50 PSA 10: price & population
PSA 10
$99.99
Raw
$0.92
PSA 10 pop
39
Gem rate
12.0%
A PSA 10 Koffing [Reverse Holo] #50 from Evolutions sells for $99.99 — a 10,768% premium over the $0.92 raw price. PSA has graded this card 326 times; 39 came back a 10 (12.0% gem rate), and 168 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $14.35. The jump from 9 to 10 is worth $85.64 — 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.
