BuyDig via eBay offers the Samsung 48.5" 4K 2160p HDR LED-Backlit LCD Ultra HD Smart Television, model no. UN49KU7000, for $647.99. Apply coupon code "CGAMEDAY10" and check out via PayPal to cut it to $583.20. With free shipping, that's the lowest total price we could find by $65. It features a 3840x2160 (2160p) native resolution, 4K upscaling, High Dynamic Range technology, built-in WiFi, Bluetooth, Smart Hub (with access to Netflix, Amazon Video, Youtube, more), USB, and three HDMI inputs.
Also available is the 54.6" version, model no. UN55KU7000, for $701.10 with free shipping via the above coupon and checkout via PayPal. That's the best deal we could find by $47. Except for its increased size, its features are similar to those above, except it has four HDMI inputs. Both deals end January 16.
Note: This coupon can only be used once per account.