I've been doing a lot of research on this recently including contacting Chinese wholesellers to see what individual parts would cost.

Essentially all I'm after is a Linux (not android) based 7-12" eink tablet with touch screen, a decent resolution / PPI for the size and at least say 2-4GB of ram at a minimum although if it was cheap enough I'd drop as far as 1GB if I really had to.

I have a Dasung E-Ink monitor and it's dreadful, lots of ghosting, very slow refresh, have to have some 'interesting' software running to make it work, hard to work with multi-desktops etc.... and very, VERY expensive: https://www.indiegogo.com/projects/paperlike-world-s-first-e... otherwise I'd attach that to a Pi or Cubox and live without the touch screen.