Groupon offers the factory-refurbished Vizio 40” Home Theater Sound Bar with Subwoofer, model no. SB4021E-B0, for $89.99 with free shipping. That's $70 below the lowest price we could find for a refurb, and $82 under than the best price we could find for a new one. It features dual 2.75" stereo drivers, a wireless 6.5" subwoofer, and 2.1-channel surround sound. A 6-foot digital optical cable is included. A 30-day Vizio warranty applies. Deal ends September 20.