![Grass Energy [1st Edition] #129 from Pokemon Gym Challenge](https://images.pokemontcg.io/gym1/129.png)
Grass Energy [1st Edition] #129 PSA 10: price & population
PSA 10
$177.50
Raw
$1.85
PSA 10 pop
42
Gem rate
26.4%
A PSA 10 Grass Energy [1st Edition] #129 from Gym Challenge sells for $177.50 — a 9,495% premium over the $1.85 raw price. PSA has graded this card 159 times; 42 came back a 10 (26.4% gem rate), and 73 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $11.74. The jump from 9 to 10 is worth $165.76 — 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.
