for selling a website that works (not for links and etc) just multiply its profit by 6 or 12 depends on a website.
I never believe in this kind of reports. Why would you want to trust this kind of useless estimator when you can do a manual search. This kind of service is only good for tracking links.
Ask from the site owner
1. earnings report
2. traffic report
Guys, use your common sense, its just like any other business, requiring research and analysis.
They are automated and what it tells are not accurate,sometime they totally say wrong
I have checked both one but found that it is just the estimation.Both tells the incorrect value for my website.howstat.com is even showing wrong PR of my website.