Well since a website is attached, it would be much easier to appraise with revenue / traffic stats. However, without a website, I would guess around mid $XXX. Mostly because of PR. I would work on backlinks.
I think that is way to much. The site shows no backlinks in google or yahoo, and only 3 in MSN. For some reason it has a PR4 but because of the lack of backlinks I would think low $xx.