Dell Home offers the Vizio D-Series 50" 4K 2160p LED-Backlit LCD Ultra HD Smart Television, model no. D50U-D1, bundled with a $150 Dell eGift Card, for $529.99 with free shipping. (The gift card will display in your cart and be emailed 10 to 20 days from ship date.) Assuming you use the gift card, that's the lowest total price we could find by $148, although we saw it for $50 less with a gift card in July. It features a 3840x2160 (4K) native resolution, 802.11ac wireless, Vizio Internet Apps Plus (with access to Netflix, Hulu Plus, Pandora, etc.), USB, and five HDMI inputs.