I know e-ink is expensive. But two tiny screens aren't THAT expensive. Someone will probably a have version of this on Hack A Day made from spares.
And no, I suck at doing write ups on my projects so I don’t have one lol. But here is the write up someone else did when they saw my post on Reddit. https://www.hackster.io/news/diy-e-reader-incorporates-mecha...