mwave offers the Arctic Cooling Silentium T11 ATX Mid Tower Case in Black, model no. PCACO-PCS1100-CBFB, for $29.99 with free shipping. That's tied with our September mention as the lowest total price we've seen. (It's also a current low by $18.) The case features four external 5.25" drive bays, one internal 3.5" drive bay, two front-side USB 2.0 ports, and two 120mm fans.