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They seem to go all over the place. I picked one up a few months ago for $350, but it is in rougher shape. For good condition ones I usually see them around the $600-$800 mark.
Last one i saw went for $600 and was restricted. What i don't understand is why the Chinese don't make a copy with a 19 inch barrel and in 7.62x25 . They would sell like hot cakes. Wishful thinking on my part i guess.