Can someone make an educated guess on min price on something like this? I guess it could basically be a Nexus 10 but with a keyboard and a different OS, puttin

Can someone make an educated guess on min price on something like this? I guess it could basically be a Nexus 10 but with a keyboard and a different OS, putting it in the $500 range. I just bought the $249 Chromebook and I love it but now I am having some buyer's remorse. However if this thing is likely to cost $500 I wouldn't feel so bad about my purchase since I just want it for a second computer to take to class.