The nine dollar computer
kickstarter.com
kickstarter.com
That said, gotta wonder what the labor/environmental impact is on that one... how cheap was that labor, how poorly are the spent chemicals discarded, and where do those materials come from?
[edit] And specifically it has an Allwinner R8 logo, which I assume is a lower-cost A13 replacement (no information about that part on Allwinner's site).
http://oldcomputers.net/popscits1000.html
2010 if you wanted something that could run Linux - http://www.pcworld.com/article/184760/the_worlds_first_99_do...