Advertizing may be the killer app for Eink that will cause the colorful low-power displays to come down drastically in price over the next few years. The photo above shows a display that will run off of a couple of AA batteries for up to six months! Read more about
Ink-In-Motion here.
If you have three or four thousand dollars you don't know what to do with, you can spring for E-ink's prototyping kit. It makes a good demo of what is possible in developing your own reader and can be had with a variety of display sizes. It is a hacker's dream. It comes with a
Gumstix computer that runs Linux. You can add whatever reader software you like. See
E-ink's site for details.
How low can we go?