Rocket's Secret Experiment

1st Edition · Gym Challenge #120

18%of 142 graded came back a PSA 10

How they graded

PSA 1025
PSA 960
Below 957

PSA 10 price guide$80

Printings

1st Edition25PSA 10s of 142
Unlimited2PSA 10s of 20

Every grade

Copies at each grade, how many sit at that grade or higher, and PSA’s price where it lists one.

GradeCopiesPSA price

PSA 1025$80

PSA 96085 at 9+$40

PSA 8+1 at 8.541127 at 8+$25

PSA 79136 at 7+—

PSA 65141 at 6+—

PSA 51142 at 5+—

PSA 40142 at 4+—

PSA 30142 at 3+—

PSA 20142 at 2+—

PSA 10142 at 1+—

Show all 10 gradesShow fewer grades

One grade up

What the next grade costs, next to how the number of copies changes.

PSA 9 to PSA 10
Costs2.0× more
Copies2.4× fewer
$40 to $80 · 60 to 25 copies
PSA 8 to PSA 9
Costs1.6× more
Copies1.5× more
$25 to $40 · 41 to 60 copies

Takes

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Population from PSA as of Sep 12, 2026. It counts grading submissions, not every copy that exists. Prices are PSA’s own price guide figures as of Sep 12, 2026.