The Closeout Guys via eBay offers the refurbished Philips Hue Lux LED Starter Kit in Soft White, model no. 433706, for $39.99 with free shipping. That's $10 under the lowest total price we could find for a new unit, although we saw a refurb for $5 less two weeks ago. It includes two bulbs and a bridge, which lets you control brightness and create schedules from your smartphone.
No warranty information is provided.