Amazon.com offers the Polk Audio F/X Wireless Surround Sound Speaker System for $149.99 with free shipping. That's the lowest total price we could find by $89. It features a 2.4GHz transmitter, Controlled Dispersion Array (CDA) technology, four 2.5" full-range drivers, and 5" woofer.

List Price: $449.95
You Save: $299.96 (67%)

BUY NOW: $150 Free Shipping at Amazon