Altec Lansing M650 Speaker System for $99.99 shipped.  Here is a screenshot for your reference.  This 2.1-channel speaker system is compatible with most iPod and iPhone models with a dock connector, and features dual 3" full-range drivers, 4" down-firing subwoofer, volume, bass and treble controls and auxiliary input.  Most places have this speaker system for about $130 or more.