Harman Kardon offers its Harman Kardon HKTS 30 5.1-Channel Home Theater Speaker System in Black for $249.99 with free shipping. That's the lowest total price we could find by $749. It features a frequency response of 45Hz to 20kHz, 8-ohm impedance, four 120-watt two-way satellite speakers, one 120-watt dual-driver center-channel speaker, one 200-watt down-firing subwoofer, and all the necessary cables and wall-mount hardware. Deal ends April 16.