Amazon offers the Avera 65" 4K LED-Backlit LCD Ultra HD Television for $456.99 with free shipping. That's the lowest total price we've seen for any 4K 65" TV. (It's also $521 under the best deal we could find for a comparable brand name TV now.) It features a 3840x2160 (4K) native resolution, USB, and three HDMI inputs.
Note: This item is currently out of stock, but it can be ordered for delivery when available.