Another cheap netbook out there is the Augen E-go (available in Blue, Red, and Silver), which is available for $109. It appears to come with a demo version of Softmaker Office, which quite frankly, is the best office suite you will get on this computer.
The only low-cost non-x86 netbooks which one can purchase appear to run Windows CE. There was, at one point, a “Elonex One T” which ran Linux, but that computer is no longer available.