I've had my share of 500 dollar beaters. The fact is, I cannot hold on to them long enough to make any money on them. I end up wanting a new ACOG or something, and selling a piece of crap rifle I care nothing about is too easy in order to put something nice on a rifle I do care about.
The way things are going this week, you could drop a Nightforce 1-4x on there instead of an ACOG!