Should you grade Nidoking #6?

Borderline

+$49.63

net at PSA 10, but the gem rate is 7.1% — profitable only if it gems

The ledger

Raw card$41.48
Regular fee−$79.99
Shipping, both ways−$15.00
Selling fees−$28.88
PSA 10 sale$214.98
Net at PSA 10+$49.63
Net if it grades PSA 9 instead+$15.38

7.1% of the 509 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.