If CMP is asking a penny more than 400 bucks, and I'm sure they will, then they can keep them. $500+ is too much for a sight unseen rifle.
I've ordered two Garands from them in the past, one was a $400 Dane with a new VAR barrel, rough finish, beat up wood, but at least the barrel was new. I did ok on that one. The second Garand was a Service Grade for $500 that I got burned on. The rifle should have never been graded as a service grade. The barrel was a pitted sewer pipe with worn muzzle, and in my opinion wasn't worth the money.
For me to roll the dice again, the price has to be a lot better than over 500 bucks.