CyberShops via eBay offers the JVC 120W 4-Channel Soundbar Home Theater System, model no. THBA10, for $127.95 with free shipping. That the lowest total price we could find by $12. It features four 3.2" speakers at 30-watts per channel, two digital optical inputs, one analog audio input, remote control, support for Dolby Digital, DTS, and Dolby Pro Logic decoders, and more.
Update: P.C. Richard & Son offers it for $99.99 with free shipping.