State Street Deals via eBay offers the refurbished Motorola SURFboard DOCSIS 3.0 Broadband Cable Modem, model no. SB6180, for $35.89 with free shipping. That's tied with our mention from last week as the lowest total price we could find for a refurbished unit, although we saw it for pennies less in December. It features a 10/100/1000 Base-T Gigabit port, front-panel LEDs, upstream and downstream channels, support for IPv4 and IPv6, enhanced network management, and more. This modem may not be compatible with all service providers. It specifically states it is not compatible with Comcast.
Note: No warranty information is provided.