C|Net News reports that Amazon is now selling Linare Linux PCs for $199 (Desktop PC company begins Amazon deal). You can check out the PC here on Amazon here: Linare PC (1.3-GHz AMD Duron, 128 MB RAM, 30 GB Hard Drive, CD-ROM). While Walmart has been selling similar systems (Linux OS PCs) for some time, Walmart is not usually a store you associate with PCs.
One small problem with the Amazon technical specs page which I hope they change soon:
Special Features: Licence [sic] Free Operating System [emphasis in original]
RMS might take offense to calling something under the GNU license "license free."