That SKS appears to be one of those walnut stocked ones being that I see no bottom mounted sling attachment. So, priced higher as a result.
Russian captures used to be $500 last year at CT. They were all heavily worn with the usual red Russian shellac slathered all over them.
The one in the photo looks not as red in colour. If it is a non Russian capture, then $800 is a decent price
Oh yes, I see you are right about that SKS. Still too much though I think. Its funny we've heard of a few of those at CT now. As for the K98, I'd certainly like to look at it. The finish also makes me think there could be more to the story, but probably just a refinished RC.