Yes, PPU (Prvi Partizan) is indeed a good source of just about anything they manufacture. I've great luck with many of their milsurp and commercial fodder.
As for Mosins, they can be found at numerous places on-line for $79 (1891/30, arsenal reconditioned). Unless you're severally strapped for cash, a run-of-the-mill mosin nagant should be within your price range. Many folks, such as myself, end up with more than one after recognizing the value of their first.