Today only. Mac Connection has the Unibody Apple Mac Mini with Intel Core i5 and Thunderbolt MC815LL/A (Mid 2011) on sale for $530 with free shipping. Measures 1.4" x 7.7" x 7.7" but no longer has an optical drive.
Intel Core i5 2.3GHz, 2GB DDR3, 500GB HDD, Intel HD 3000 Thunderbolt/FireWire, 802.11b/g/n, Mac OS X 10.7 Lion OS
Deal has expired