Should you grade Mew #3?

Borderline

+$1923.97

net at PSA 10, but the gem rate is 1.3% — profitable only if it gems

The ledger

Raw card$256.09
Regular fee−$79.99
Shipping, both ways−$15.00
Selling fees−$347.95
PSA 10 sale$2623.00
Net at PSA 10+$1923.97
Net if it grades PSA 9 instead+$1544.82

1.3% of the 525 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.