Why pay that much for a used WASR 10 when you can get a new one for not much more than that? I can see the collectible factor for being "assigned" to contractors, but other than that I don't see the draw of these.
IMO the 6920 of the AK world is the SLR-107FR. Have one along with a SAM7R. The SAM7's action feels a little smoother because it's a milled receiver, but I don't think the weight gain over the SLR is worth it if you will be carrying it in any capacity.