Should you grade Radiant Blastoise #18?

Borderline

+$8.66

net at PSA 10, but the gem rate is 58.0% — profitable only if it gems

The ledger

Raw card$10.89
Regular fee−$79.99
Shipping, both ways−$15.00
Selling fees−$17.96
PSA 10 sale$132.50
Net at PSA 10+$8.66
Net if it grades PSA 9 instead$-83.32

58.0% of the 8,640 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.