Costco offers its members the Yamaha 7.2-Channel Network AV Receiver, model no. TSR-5790, for $339.99 with free shipping. (Non-members pay $19.50 more.) That's $110 less than the lowest total price we could find for the identical RX-V579BL. (Costco has a unique model number for this receiver.)
It features 115 watts per channel (RMS), 4K Ultra HD pass-through, Bluetooth, WiFi with AirPlay support, YPAO sound optimization setup, streaming audio services (such as Pandora and Spotify), and six HDMI inputs. Deal ends December 27.