Unown [O]

Grading with PSA pays if your copy has better than a 26% chance of a 10.

23% of the 71 copies PSA has graded got a 10. People mostly send their cleanest copies, so a typical raw copy's odds are lower.

Raw (NM)

$2.79

TCGplayer

PSA 10

$262.50

6 sales

PSA 9

$32.48

5 sales

If it misses

$20.06

below 10, by PSA's grades