Cylcopscase via eBay offers the refurbished Motorola SURFboard DOCSIS 3.0 Broadband Cable Modem in White, model no. SB6141, for $64.99 with free shipping. That's tied with June's mention of a refurb as the best price we've seen for this modem. (It's also $17 under the lowest total price we could find for a new unit elsewhere.) It features support for IPv4 and IPv6 and enhanced network management. This modem may not be compatible with all service providers.

Note, no warranty information is provided.