If you want a shooter, a lot of Swiss k31s have hit recently and are around 500. Yugo mausers in decent shape, though non matching, in the 400 range. Classic firearms got hold of some Enfields that are going for 450 if you have your C&R license. I’m suspicious one. We all know Enfields can be a crap shoot. I think most of the non-crap ones are taken. I got lucky with mine, but I a,so paid a premium for it. A fair number of carcano m91 ts rifles have hit recently for under 300, though they’re almost sold out, ammo has dried up, and... they’re carcanos. I picked a carcano up from buds just because I didn’t have one, and I’m trying to have at least one of every major bolt rifle of WW2. A shooter it is not... at least accurately. But it’s safe, functional, furthers my collection, and it was cheapish.
Personally, Mosin rifles are not worth what they’re going for right now. Not to me. Unless it’s a Finnish, but with what they’re going for they still aren’t worth it.