Ectaco jetBook Lite Electronic eBook Reader it's the cheapest eBook Reader I could find on Amazon.com
For about $148.95 you'll get:
* Support of ePub, Mobi, PRC, RTF, txt, pdf, fb2, jpg, gif, png, and bmp file formats
* Support of DRM format through Barnes & Nobles. True pocket-sized portability for thousands of eBooks.
* Support for eBook contents Screen rotation support for both portrait & landscape modes. SD card slot. Batteries 4xAA
* Bidirectional dictionaries for certain European languages (including German and Spanish) are available.
* Pre-loaded CIA World Factbook. Bookmarks and auto page turn functionality. Adjustable font type and size.
* Multilingual interface options that include German and Spanish.