Newegg offers the Antec P50 Black Micro ATX Mini ITX Computer Case for $49.99. This $20 mail-in rebate cuts that to $29.99. With free shipping, that's the lowest total price we could find by $40. It features one external 5.25" drive bay, three internal 3.5" drive bays, and two internal 2.5" drive bays. Rebate ends May 30.