There are many sites on internet to "estimate" your domainname value or website value, for example my own website:
[url=http://valuemydomainna.me/]valuemydomainna.me[/url]
Also, this will get you indexed in google results, and cause a (little) more traffic, which elevates the value a tiny fraction because of potential ads value
You can also mass-submit on some websites like here:
[url=http://www.imtalk.org/cmps_index.php?pageid=IMT-Website-Submitter]ImTalk.org[/url]
Some sceptics will say that google will flag your site as spam, however i measured it myself, and i got higher rankings on a lot of sitees because of this, ofcourse you need a valid website with good seo and content as basics, but it can still boost traffic and thus ranking eventually
Think about it...
Mk-Ultra
Value Of Domain Test