![Slugma [1st Edition] #20 from Pokemon Japanese Mysterious Mountains](https://pokeinvest-japanese-card-images.nyc3.cdn.digitaloceanspaces.com/Mysterious_Mountains/104_Slugma_20.jpg)
Slugma [1st Edition] #20 PSA 10: price & population
PSA 10
$187.50
Raw
$8.99
PSA 10 pop
17
Gem rate
39.5%
A PSA 10 Slugma [1st Edition] #20 from Japanese Mysterious Mountains sells for $187.50 — a 1,986% premium over the $8.99 raw price. PSA has graded this card 43 times; 17 came back a 10 (39.5% gem rate), and 17 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $35.61. The jump from 9 to 10 is worth $151.89 — 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.
