NeweggFlash offers the refurbished Logitech Z506 5.1-Channel Surround Sound Speaker System, model no. 980-000430, for $37.99 with free shipping. That's $12 under our mention of a new model from last month and the lowest total price we've seen in any condition. (It's $16 below the best price we could find for a new unit today.) Features include 75 watts RMS power, a down-firing subwoofer, 45Hz to 20kHz frequency response, and 3.5mm audio input.