Amazon offers the Logitech Z623 200-watt 2.1-Channel THX-Certified Speaker System, model no. 980-000402, for $99.99 with free shipping. That's the lowest total price we could find by $10, although we saw it for $10 less during Black Friday week. It features 200 watts RMS, two satellite speakers, and a 130-watt subwoofer.