Here is my $500 system:
http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-837
Tang Band W69-1042J 6"x9" Subwoofers, quantity 2, $93.58
http://www.woofersetc.com/index.cfm?fuseaction=product.display&Product_ID=5207
CDT Audio CL-S60A - CDT Audio Classic 6.5" 2-Way Component Speakers...