Estibot.com DomainTops.com NameBoy.com but for me they have no meaning because they are made automaticly, you can also purchase an appraisal from godaddy sedo etc..
I'll look into it. I suppose no one has an automatic domain name value website? My only problem with going to a registrar to get an appraisal is they have a vested interest in the result. It's sort of like going to a real estate agent to get an appraisal on your home.
Get it appraised, you can usually get that for around $5. I know godaddy does it for that cheap and they give you a little certificate explaining why they chose the amount they did. However, to realize its true potential, I don't think you'll be getting the appraised value until someone comes along and can do something with it.
^^^^^^^^ I do a lot of business with GoDaddy. BUT... buying a domain name at the same place I get domain appraisals doesn't seem like the best business choice for me. Domain registrars have a vested interest in inflating domain appraisals to increase their business. Now, if GoDaddy stands behind the appraisal by offering to buy the domain for the price they appraised it... that's different.
There are some domain appraisal software you can use to get the job done by yourself. A little google search on this will help. Or PM me for assistance if you couldn't find one by your self.