Best Buy offers the Pioneer Elite 7.2-Channel 4K Home Theater AV Receiver, model no. SC-91, for $599.98 with free shipping. That's the lowest total price we could find by $25. Features include 130 watts of power per channel, video signal upscaling, music streaming apps (such as Pandora and Spotify), Spotify Connect, Apple AirPlay, WiFi, Bluetooth, 4K and 3D video pass-through, USB, and 7 HDMI inputs.

Of note, it's also available in an open box for $539.99