...or buy an Ebookwise unit for $109.
I have one working REB 1100 - and I use it all the time - It's great to read in dark light, at night, on the beach at night, etc.
However, I would have to disagree with you that the PRS and all e-ink devices are somehow a step back. If that's the case, then Sony should also take note that books printed on paper also are also not backlit.
Don