A buddy of mine picked up a WASR10 imported/modified by Century last year. It has been very reliable for him. I fed it a few boxes of rounds too & found it fun to shoot & reasonably accurate for plinking purposes. I have heard some people say to avoid using poly mags with the WASR10's, but his loves the poly mags. I can't say for sure how much he paid, but it was AROUND $500 at a gun show. I say around, because he said it was comparable to what i paid for my XD45.
He did change out the wood furniture for some plastic furniture with mounting rails & an extendable buttstock.
edit * My buddy did make the mistake of ordering the tapco buttstock for a "milled receiver". I tried briefly to explain, but some people don't listen well. He did get it to fit, after some serious filing. He later replaced it with the MUCH better fitting "stamped receiver" model. Yes, I LOL'd.