BuyDig offers the LG 5.1-Channel 500-watt Smart 3D Blu-Ray Home Theater System, model no. BH5140S, bundled with two 6-Foot Ethernet 3D-Ready HDMI Cables for $169 with free shipping. (Click through "BuyDig" to shop this deal.) Outside of the mentions below, that's the lowest total price we could find by $29. It includes five speakers, subwoofer, and a Blu-ray player. The player features WiFi and LG Smart TV with Netflix, Hulu Plus, and Amazon Instant Video.
Don't need the extra cables? Amazon and B&H-Photo Video charge the same for the system alone; while Sears charges a buck more.