Professor's Research #209 PSA 10: price & population
PSA 10
$39.99
Raw
$4.44
PSA 10 pop
433
Gem rate
61.2%
A PSA 10 Professor's Research #209 from Sword & Shield sells for $39.99 — a 801% premium over the $4.44 raw price. PSA has graded this card 707 times; 433 came back a 10 (61.2% gem rate), and 221 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $19.98. The jump from 9 to 10 is worth $20.01 — 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.
