I'd say the only ding" against it is that the grips have been replaced.
Other than that, it looks like a good find to me.
As far as the price goes, it seems like a lot of money, but heck a good condition M-1 carbine will set you back approx. $750.00 now days.
Ahhhh, for the days I used to buy those things for $75.00 with ammo thrown in as a "deal sweetener".