Groupon offers the Interworks Bluetooth Wireless Music Receiver for $19.99 with free shipping. That's the lowest total price we could find by $9, although we saw it for $4 less in January. Use this receiver to turn 30-pin (iPhone/iPod/iPad dock) audio systems into wireless music players. Deal ends March 9.
Crutchfield offers the Yamaha Aventage Series 110-Watt 3D 7.2-Channel Receiver, model no. RX-A1020, for $699.99 with free shipping. That's the lowest total price we could find by $100. It features 110-watts per channel, frequency response of 20Hz to 20kHz, 4K pass-through, eight HDMI inputs, and USB.
Groupon cuts up to 73% off a selection of new and refurbished home theater items, as listed below. Plus, they all qualify for free shipping. With items starting from $64.99, that's the lowest total price we could find by at least $3 and as much as $35. The deals, with expiration dates noted: