Great question. In a nutshell, your site is worth as much as someone is willing to pay you for it.
It really varies and that's what makes eSiteAuction.com such a great tool. After adding your site to our marketplace, you have a very targeted buying audience that's looking for an opportunity. It also doesn't hurt to blog about it or market your auction on other sites. Just point them to your eSiteAuction url and hope the bids start pouring in.
Just make sure you pick a price you're comfortable selling your site for. You don’t want to undercut
yourself especially after months if not years of hard work.