![Porygon [Master Ball] #137 from Pokemon Japanese Scarlet & Violet 151](https://pokeinvest-japanese-card-images.nyc3.cdn.digitaloceanspaces.com/Scarlet_Violet_151/351_Porygon_137.jpg)
Porygon [Master Ball] #137 PSA 10: price & population
PSA 10
$64.99
Raw
$9.18
PSA 10 pop
1,309
Gem rate
89.2%
A PSA 10 Porygon [Master Ball] #137 from Japanese Scarlet & Violet 151 sells for $64.99 — a 608% premium over the $9.18 raw price. PSA has graded this card 1,468 times; 1,309 came back a 10 (89.2% gem rate), and 128 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $18.00. The jump from 9 to 10 is worth $46.99 — that spread, times your real odds of the 10, is what decides whether grading pays.
The September 2026 Grade Report ranks the 30 most profitable cards to grade right now, by expected profit after every fee. Same math as this page, run across the whole market. $19, one time, instant.
See the top 30 →Prices from real completed sales, updated daily. Population data from PSA's public population report.
