Should you grade Slowpoke & Psyduck GX #35?

Borderline

+$398.36

net at PSA 10, but the gem rate is 38.7% — profitable only if it gems

The ledger

Raw card$113.50
Regular fee−$79.99
Shipping, both ways−$15.00
Selling fees−$93.15
PSA 10 sale$700.00
Net at PSA 10+$398.36
Net if it grades PSA 9 instead$-66.31

38.7% of the 4,341 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.