ASUS Vivo Tabs - what is the difference between models?

Can someone tell me what the difference is between the ASUS Vivo Tab ME400C and the TF810C? One sells for $500 and the other for almost $800. One has an 11.6 inch screen and the other a 10.1 inch.. but other than that they look pretty much identical. Same resolution, both atom 1.8GHz processors.. I just don't get the huge price difference.

I'm starting to wonder if the amazon listing has an error on the specs of the 11.6, but they seem to mirror the ASUS website info. There's also a lot of confusing info out there that the 11.6 has a 1080p display, but that's incorrect according to the ASUS site.

Any ideas?