I got an ASUS eeePC 900A for $150 and have been playing with it.
With only a 4 GB SSD "hard drive" it doesn't have a large capacity.
I can see why so many have been returned and show up now as refurbished units, after about half the updates that were downloaded automatically when I booted the machine, it was out of disk space so the rest of the updates wouldn't install (and the error message wasn't clear why, just it wouldn't work).
I reformatted the SSD and installed an eeePC Ubuntu configuration with Open Office 3.1 and have about 900MB left.
I'll also install Windows XP (without a lot of options) on a SD card so I can dual boot either to Windows or Linux