developed as site for to check OVT/PR etc. as fonzie_007 already said, selling could be a tough one, since your target group would almost exclusively be domainers. at least when you go developing you'd get the attention of webmasters, developers and companies. key would be to make sure that you have custom scripts running that are only available via your site, which in itself would present a bit of a problem.
other than that, undeveloped: low- (maybe)mid $xx as most other 4 character.com(s)