Seen it today from a friend who got one. The case with keyboard, 13in screen and trackpad is about $200 - $250. You put in what ever Raspberry Pi or other board in it and it becomes a laptop. Nice!
 
My friend's has the black charcoal one, claiming that there are no US Sellers (yet) but he got his through Canada. He has two but the keyboard on the first one broke. It's a design flaw he thinks, it is a very hard and brittle plastic that breaks easily but otherwise works great.
 
It comes with a 12-hour battery (I'm assuming that this is done on the R-Pi 2, so life will be longer on a Model B/B+).
 
Enjoy the link. I wish I had one.... lol!
http://www.pi-top.com/product/pi-top
 
(They got other products as well on the website. check out the pip-topCEED)