Frys.com has LOGITECH Z520 SPEAKERS for $110 - $60 rebate (limit 2). Shipping is about $9 for one, and $12 for 2. The same speaker goes for $85 at Buy.com and $100 at Newegg. Some people shy from rebates--I've never had any issue with Logitech rebates. These are ok for casual listening (definitely not for gaming or movies due to the lack of a subwoofer).
http://www.frys.com/product/5989154?...H:MAIN_RSLT_PG
http://www.frys.com/product/5989154?...H:MAIN_RSLT_PG