I have a few good domain names for sale and would like to have the appraised. Are there any good free or inexpensive appraisal services.\ Also, is it allowed to list your domain names for sale on this forum? If I post these names on this forum could someone give me an idea of about how much they may be worth? Thank you.
You can try http://estibot.com/ And yes this forum has buy sell category too. You can list your domains at there.
As far as free appraisals go, I like estibot.com aswell. The only thing I would say is that you shouldn't take the value as being perfect, it could be out either way and should only be used as a rough estimation. If you want to sell your domains they belong here: http://forums.digitalpoint.com/forumdisplay.php?f=59
You could try http://www.swiftappraisal.com/ I have used them personally and they are quick in result. Of course you must give all the necessary data. Another good service (although not domain appraisal specific) is http://www.dnscoop.com