This piece is likely pertinent due to the discussion of e-ink screens: https://news.ycombinator.com/item?id=18100447 from a couple days ago.
I can see the appeal of something Dasung 13" screen: https://www.amazon.com/Dasung-Ink-Paperlike-13-3-Monitor/dp/... for long, sequential text documents. It'd make an interesting second display. Just not for $1,200.