Crutchfield offers the Polk Audio Blackstone 5-Piece Home Theater Speaker System, model no. 107TL150, for $194.99 with free shipping. (Amazon charges the same.) That's the lowest total price we could find by $105. It features four compact satellite speakers, a center channel speaker, 125Hz to 20kHz frequency response, 89 dB sensitivity, and 8 ohms impedance.