[limomium]

Well, I don't know. A decent tablet goes for $300. I could see myself paying +33% for significantly increased battery life. On mobile devices, the screen eats most of the battery charge, therefore also contributing most to the battery's degredation over years. An e-ink tablet could potentially last much longer.

[secfirstmd]

It's not cheap but for me the added productivity of so many notes and being able to read long pdf documents comfortably makes it well with it.