Get a checklist before buying domains

Good domains for you to buy and sell need to have the folowing:

The more Google searches for the keyword, the better.
No trademark infringements
Similar domains have been sold in the past.(keyword related)
The .com extension , but it can be applied to other extensions.
No hyphens.
No stop words.(negative words).
No numbers.(unless you are targeting the china market or launching a service)
Shorter is better.
The higher the CPC, better is.
Age; older,better (these are well know domains that have been promoted before , etc
Competition - The lower the availability of domains for this niche, the better.
end users; end-users prefer good-looking domains.
Appeal; the wider the audience, the better.
American English is best for an international, English-speaking domain .
Brandability;more brandable, better.
The more obvious the end-use, the better.
Domain reputation (check if there is any negative reviews on search engines ).
Blacklisted