TM issues with MySpace don't really count. There are hundreds of such websites, and if MySpace went after each one of them, it'll exhaust all their resources.
2old4Myspace.com is an interesting concept, I'll agree. But its not a name a reseller will buy. Also, 2old4Myspace.com should be a website (if somebody develops it) for older people. I doubt older people would fancy the letters '2' and '4'.
reg fee to a reseller
end user will vary according to pockets.
WifeBuy.com is a pretty disgusting name frankly. I wouldn't even wanna have such a name in my portfolio.