VMInnovations via eBay offers the VM Audio 300-watt 5.1-Channel Surround Sound Speaker System
, model no. EXMS550T, for $79.99
with free shipping
. That's $70 off and the lowest total price we could find. It features a 35Hz to 20kHz frequency response, five full-range satellite speakers, 5" subwoofer, and USB and SD media card reader input.