It's not the prices on the actual Russian rifles. It's the cost of the current options that will react. If Ishmash rifles are back on the market Arsenals Bulgarians (which are amazing) immediately reduce value. Zastava rifles (which kick a$$) will have no other choice but to reduce mark up...
My new favorite, in 7.62x39 and 5.45. (especially the 5.45, it's lacquered + non-corrosive)
http://www.sgammo.com/product/wolf-or-wpa/1000-round-case-762x39-123-grain-fmj-mil-spec-ammo-lacquer-and-sealant-wolf-perf
This guy wants $450 for a Zastava Underfolder just across the line into SC.
http://www.armslist.com/posts/3487756/south-carolina-rifles-for-sale--ak-47-zastava-m70-n-pap-762x39-ak47-yugo-7-62-npap