Groupon offers the Onkyo 7.2-Channel 805-watt 4K UHD WiFi Bluetooth A/V Smart Receiver, model no. TX-NR545, for $289.99 with free shipping. That's the lowest total price we could find by $38, although we saw it for $5 less three weeks ago. It features 115 watts per channel, 4K UHD passthough, WiFi, Bluetooth, pre-installed apps (Spotify, Pandora, etc.), AM/FM radio, support for Apple AirPlay and Dolby Atmos, USB, six HDMI inputs, and one HDMI output. Deal ends May 11.