I missed this deal last weekend but it is back so I am buying this now-- You get the Netgear R6400 AC1750 Router bundled with the CM400 Cable Modem at $60 savings, so the Cable Modem ends up being free, only $129.9 for the bundle.
http://www.amazon.com/dp/B0161NBPZS

Netgear AC1750 Smart Wi-Fi Router + Netgear CM400 DOCSIS 3.0 Cable Modem