I recently bought a cheap eReader with e-ink. I like it, but the resolution and screen size are too small and e-ink monitors are ridiculously overpriced. I'd still love to have a 32 inch e-ink secondary monitor for reading if they weren't so damn expensive. It would not be for gaming or videos because the 15 hertz refresh rate and ghosting is silly, bit because when you're reading it can look so sharp and be easy on the eyes.
