A shell with a screen. The 7" RasPi touchscreen is ~$70 and that doesn't have a keyboard, trackpad or hdmi (it uses a DSI ribbon cable and the gpio instead).
The RasPi touchscreen is way overpriced too. You can get a whole tablet running Windows 10 for a little bit more. Sure it will come from China and will be probably filled with backdoor but the cost is there.
A better example would be that Acer laptop that someone else talked about here: http://www.microsoftstore.com/store/msusa/en_US/pdp/Acer-Asp...