Grumpig

Grading with PSA pays if your copy has better than a 16% chance of a 10.

16% of the 219 copies PSA has graded got a 10. People mostly send their cleanest copies, so a typical raw copy's odds are lower.

Raw (NM)

$18.25

TCGplayer

PSA 10

$380.00

7 sales

PSA 9

$47.10

13 sales

If it misses

$45.04

below 10, by PSA's grades