http://www.bigboardlist.com/ (note that this is my project)
Cubieboard and Wandboard Quad both have SATA.
Cubieboard and Wandboard Quad both have SATA.
FWIW also, comparing that $200 pricepoint, Newegg recently had a Lenovo server Intel Core i3-3220 3.3GH Dual-Core; 4GB RAM; DVD ROM, no-disk, no-os, for $250. (reputed backdoor at no extra cost!)
Update: I just went to techbargains and searched "server", that one was recently expired. When I'm in shopping mode I just keep an eye on a couple such shopping sites to see what comes by.
I'm actually thinking of building a hadoop cluster at home so something cheap would be nice.
Foxconn has cheapo machines on newegg as well.
A while ago I bought a Fujitsu P180 and it was a lot of machine for the price but the prices went way up.