Should you grade Blastoise GX #218?

Borderline

+$232.26

net at PSA 10, but the gem rate is 43.0% — profitable only if it gems

The ledger

Raw card$99.16
Regular fee−$79.99
Shipping, both ways−$15.00
Selling fees−$65.59
PSA 10 sale$492.00
Net at PSA 10+$232.26
Net if it grades PSA 9 instead$-86.11

43.0% of the 1,732 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.