What's a Mosin Carbine Worth These Days?

I'm looking into buying a Mosin M44 for 300 bucks. It's 1944 dated, all matching except for the buttplate but its missing the bayonet and its undergone some minor Bubba activities. Previous owner polished the bolt and buttplate and put a few coats of Tru-oil on the stock.

Seems like a decent deal, but I'm not sure how much its gonna cost to fix the bayonet.