iLive ITP280B 3.1-Channel Sound Bar with Built-in Subwoofer for $24.99 shipped.  Here is a screenshot for your reference. It features 3 built-in speakers, 4" subwoofer, motorized iPhone and iPod dock, digital volume, treble and bass controls, digital FM radio tuner, includes a remote and is wall-mountable.  Most places have it for about $96 and more.