I have PaulFirst.com and ReportFirst.com. and I would sell for either $500 because there are only a few men called Paul First and 'Report First' is pretty meaningless. I think you may have a slightly over estimated the value of WhenFirst.
WhoFirst ,WhereFirst ,WhatFirst and even WhyFirst are all so much better.
If ever, anyone develops time travel WhenFirst will be great, but until then......