It probably is a scam. I know most of the cars on that site are either complete wrecks or rebuilds. When I initially saw it I though maybe it was a salvage title car or something that looked nice on the outside or was jacked underneath.
I saw that appraisal after I posted on here and thought that was way to high to not be a BS car... I'm leaning towards scam but if you could get it for that price and it was a salvage it would be an awfully nice parts car, or just something to drive without putting any money into it.