As one of its daily deals, Best Buy via eBay offers the Sony Shake55 3,000-watt Wireless Music System in Black for $569.99 with free shipping. That's the lowest total price we could find by $329. It features a three-way speaker system, FM/AM radio tuner, CD player / DVD burner, Bluetooth, DJ effects, LED speaker lights, mic input, USB, and RCA inputs. Deal ends today.