Depending on the niche it should get 20k to 40k. This is from my experience selling sites over the last 10 years or so. If you want to send me the details of the site davidpaulkrug@gmail.com I'd be willing to take a look and pass it onto my list of buyers.
You could always try selling it at <a href="http://sideprojectors.com" rel="nofollow">http://sideprojectors.com</a> - more than happy to help you out for spreading the word.