Microsoft Windows Home Server 2011 $45 at Newegg

Newegg has the Microsoft Windows Home Server 2011 64-bit System Builder OEM for $53 - $8 off with coupon code EMCKAKD36 [Exp 9/12] = $45 with free shipping. Features the ability to back up and restore other computers, remote data access, central data storage for media, and supports add-ins.