Beach Camera via Amazon offers the Logitech Z906 500-watt 5.1-Channel Surround Sound Speaker System, model no. 980-000467, for $109.99 with free shipping. That's $28 under our mention from two days ago and the lowest total price we've seen. (It's a current low by $193.) It features 500 watts RMS of total system power, four satellite speakers, side-firing subwoofer, center speaker, and wireless remote.