Should you grade M Slowbro EX #27?

Borderline

+$5.66

net at PSA 10, but the gem rate is 32.1% — profitable only if it gems

The ledger

Raw card$8.75
Regular fee−$79.99
Shipping, both ways−$15.00
Selling fees−$17.17
PSA 10 sale$126.57
Net at PSA 10+$5.66
Net if it grades PSA 9 instead$-78.11

32.1% of the 3,288 copies PSA has graded came back a 10. Pop gem rates are a ceiling — centering and surface on your copy decide.

Prices from real completed sales, updated daily. Population data from PSA's public population report.