Samsung SCH-i730
You can buy the phone on ebay
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&catego ... »
Whether it is legitimate or not, I don't know.
You can buy the Treo 650 which is about equivalent to this phone in functionality for around $400 (though I prefer this phone over the 650). I believe I will wait until it is released which I hope will be soon. I can't see anyone wanting to shell out that kind of money for it.