Buy.com's deal of the day for today is on the Logitech Z520 speaker system (model no. 980-000337) which was $129.99, but has been cut to $109.99.  Until 8/22/10 this $25 mail-in-rebate offer drops the price further to $49.99.  That's about $44 less than the lowest price offered anywhere else.  FREE shipping is included and sales tax applies for residents of New York and California.  Features include 360-degree sound delivery, plug-and-play support for iPods, and compatibility with both Mac and PC computers.

The Logitech Z-2300 2.1-Channel Multimedia Media System with subwoofer and remote control is available today from Amazon.com for $109.99, whbich is $60 less than the list price of $169.99. Also available at Amazon.com is the JBL Duet Speaker System  which has gone down 37% from $59.99 to $37.67 with FREE shipping included. The Altec Lansing Expressionist BASS Desktop Speakers can be found this week at JR.com for the discounted price of $88.94, after an $11% price cut, with shipping rates starting at $2.95.