to be honest, i dont think the domain name is the best choice. I think "webworth" as opposed to webcost could give a better description of what the site is offering. "sitevalue.me" is also open. i do like the site and the way it works.
Τhank you matt_62 WebCost.info is a tool that helps you to estimate website daily income, daily visitors, pagerank, traffic details. That information is very interesting for website sellers or buyers or even your personal interest.
I don't agree with any software that calculates a business value - novelty use yes, business use , no.