Just got one of these things and am expecting delivery on Tuesday.
I hear it is a pretty good ebook reader. The battery life could be better, but I'm willing to put up with that. I'm guessing the battery life is similar to the REB-1200 or 2150. It runs wireless too and I hear you can install up to 16gb on a CompactFlash card.
I got mine off eBay for $107 and $19 shipping. They still have some on eBay for sale I think.
Or you can get it from uBid:
http://www.ubid.com/Web_DT_Web_DT_37...601921318.html
For some info:
http://www.dt375.com
Not eInk but pretty nice!
http://www.teleread.org/blog/?p=6588
Some good articles about it:
http://www.teleread.org/blog/index.php?s=dt375