As one of its daily deals, Groupon offers the refurbished Vizio VHT510 5.1 Home Theater Speaker System
in Black for $169.99
with free shipping
. That's $108 under our mention of a new model from last winter and the lowest total price we could find for a refurb by $103. The VHT510 features two rear satellite speakers and a sound bar with both center channel and front channel speakers. It also includes a wireless 6.5" subwoofer with a range of up to 60 feet. Deal ends September 22 at 1 am ET.