Walmart offers the Motorola Arris Surfboard DOCSIS 3.0 802.11n Wireless Cable Modem in Black for $78.44 with free shipping. That's $2 below our mention from last week, the best deal now by $12, and the lowest price we've seen for a new unit. It acts as an 802.11n access point, features four Ethernet ports, and supports IPv4 and IPv6 and enhanced network management. Note: It may not be compatible with all service providers.