eBooks displays appear to be getting faster. The main problem is that large eInk displays are still very expensive. An eBook reader with a DIN A4 (14.32 inch di

eBooks displays appear to be getting faster. The main problem is that large eInk displays are still very expensive. An eBook reader with a DIN A4 (14.32 inch diagonal) screen costs around $800 or so. There aren't many to choose from. They would be extremely useful to read (and annotate) scientific papers. Perhaps the next version of the reMarkable ebook reader will feature a backlight.