Should you grade Mew ex #347?

Borderline

+$169.15

net at PSA 10, but the gem rate is 43.8% — profitable only if it gems

The ledger

Raw card$475.00
Regular fee−$79.99
Shipping, both ways−$15.00
Selling fees−$113.36
PSA 10 sale$852.50
Net at PSA 10+$169.15
Net if it grades PSA 9 instead$-127.01

43.8% of the 48 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.