Newegg via eBay offers the Motorola SURFboard DOCSIS 3.0 Cable Modem, model no. SB6141, for $79.99 with free shipping. That's the lowest total price we could find by $7, although we saw it for $11 less a week ago. It features support for IPv4 and IPv6 and enhanced network management. It may not be compatible with all service providers. Deal ends September 29 at 11 am ET.