For in-store pickup only and with stock varying by ZIP code, Micro Center offers the factory-refurbished Samsung 55" Nano Crystal 4K 2160p LED-Backlit LCD Ultra HD Smart Television, model no. UN55JS700D, for $499.99. That's $50 below our August mention and the lowest total price we've seen for any 55" Samsung 4K TV. (It's also $478 less than the best deal we could find for a new unit today.) It features a native resolution of 3840x2160 (4K), quad-core processor, screen mirroring, 802.11ac wireless, Internet Apps (like Netflix, Hulu Plus, and YouTube), USB, and four HDMI inputs. A 90-day Samsung warranty is included.
Update: Shipping info corrected.