You say you are a shooter not a collector but the PPSH is very rare in the US and it is a collector gun. The best I have ever seen a PPSH was $14000 and that was a few years ago.
If you want a subgun for a shooter, look at the MAC type guns, M76, Sten, Uzi
If you were thinking about the PPSH because the ammo is so cheap... http://www.subguns.com/classifieds/i...uery=retrieval
look at that.