I planned on developing this domain in the future. The theme would be "food which": Then a drop down menu with subjects like:
prevent cancer
support bone density
increase brain function
curb hunger
add mass
support lean muscle growth
improve (fill in the blank) function.
ect.

I got an email today from someone interested in purchasing the domain name. I haven't done anything to the site, yet.
1) is my development idea any good?
2) what should I ask for?
3) Is there a resource for scammer name's? (There was nothing mentioned in the e-mail about appraisals)