The Kindle DX, Amazon’s large-sized ereader, is available on Woot today for $200. It’s refurbished, but carries a full warranty. The unit has free 3G, but no WiFi.
The DX has become my favorite ereader because of its large-sized screen. It’s also much lighter and thinner than my iPad and so you can get the large screen in a much more convenient factor. Additionally, it makes a great PDF reader. All my various PDF manuals now reside on the unit.