I have a as-good-as-new Pandigital 6" eReader for sale. It has the ePaper display for just like paper and low power consumption (rated for 4000 page turns per charge). Touch screen and physical buttons for menu selection/page turning. Automatically orients screen when the device is turned. Built in WiFi allows you to surf the web/send email/purchase books from Barnes and Noble. 2GB memory with support for up to a 32GB microSD card.
http://pandigital.net/?PageID=357
I bought this to play around with -- I have two other eReaders. I'm done playing, and now it's time for someone else to get a turn. I have the reader and the charger with the original box and documentation for $30 + shipping.