Groupon offers the factory-refurbished Samsung Radiant360 R1 Bluetooth Speaker, model no. WAM1500, for $84.99 with free shipping. That's $10 under our refurb mention from last week and the lowest total price we've seen. (It's also $40 below the best price we could find for a new one.) It features 14 watts of output, a 3.6" woofer, 1" dome tweeter, Bluetooth 4.0, and tap and swipe speaker controls. A 90-day Samsung warranty applies. Deal ends April 7.