I've really liked using the e-ink display on the kindle paperwhite, but I've never seen this sort of display for a desktop pc or laptop pc. Do you ever think the cost will come down enough for that to be a possibility? I truly like the energy saving aspect of it.
e-ink displays have a terrible refresh rate. Your B&W kindle takes about 1/2 a second to update- that's 500ms.
A random 13" colour e-ink display i looked up shows 36 seconds refresh rate. yes, over 1/2 a minute.
Unless your display is refreshing at something like 40ms or less, it's simply no good as a dynamic display: using cursors is nearly impossible, scrolling will be maddening.
Putting aside color gamut (a recent innovation in e-ink, it still can't compare to backlit displays in range) .. price isn't the first problem, the first problem is engineering reasonable refresh rates.