We aren't sure when this happened but Wal-Mart is now carrying the Microsoft Surface Pro and RT tablets. You can also find the type and touch covers as well as adapters and power supplies for the Windows 8 tablets.
Online, Wal-Mart has the 32GB Surface RT for $349 or $449 with the touch keyboard. The Surface Pro is running $899 for the 64GB version and $999 for the 128GB version. Keyboards are running $129 for the type cover and $119.99 for the touch cover. The bad news is that it appears that supplies are limited.