Blastoise-EX

Grading with PSA pays if your copy has better than a 28% chance of a 10.

14% of the 611 copies PSA has graded got a 10. People mostly send their cleanest copies, so a typical raw copy's odds are lower.

Raw (NM)

$15.88

TCGplayer

PSA 10

$255.00

5 sales

PSA 9

$43.74

13 sales

If it misses

$35.15

below 10, by PSA's grades