Sony Store offers its factory-refurbished Sony ES 700-watt 7.2-Channel Network Receiver, model no. STR-DA2800ES, for $749.97 with free shipping. That's $248 under the lowest total price we could find for a new unit. It features 100 watts per channel into seven channels, 4K pass-through and upscaling, 4-port Ethernet switch, eight HDMI inputs, and three HDMI outputs. A 5-year Sony warranty applies.