newegg offers the Polk Audio RM510 5.1-Channel Speaker System for $239.99. This $50 mail-in rebate drops it to $189.99. With free shipping, that's $10 under our May mention and the second lowest total price we've seen. It features a four satellite speakers, a center-channel speaker with a frequency response of 95Hz to 24kHz, and a 10" 100-watt subwoofer with a frequency response of 32Hz to 250Hz. Deal ends November 10.