Best Buy offers the refurbished Samsung 4K 3D Ultra HD Smart Blu-ray Player, model no. UBD-K8500, for $149.99 with free shipping. That's $40 under our November mention of a new unit and the lowest total price we've seen for it in any condition. (It's also at least $74 less than you'd spend for a new one elsewhere.) Features include HDR support, streaming apps, USB, and HDMI.
A 1-year warranty applies, although it's unclear who backs it.