I was in the same boat as you two months ago, but I opted to get a SAR-1.
$319 is a good asking price for a WASR, being that the normal price I see at guns shows and stores are about $380-$400.
Just check to make sure the sights are not canted, that the magazine well wasn't opened up to much when Century convereted them to a High Capacity AK, I usually put a Magazine in and see how much it wobbles, some are bad and some are pretty tight.
This is all information that I've gathered from other members on this site. And from this site which I think is great.
http://www.gunsnet.net/Linx310/model.htm#wasr10gp
I hope this helps. But I'm also a AR guy, who crossed over to the dark side and I've loved every minute of it.