Ending today, Newegg offers the Netgear CM500 DOCSIS 3.0 Cable Modem, model no. CM500-100NAS, for $79.99. Coupon code "NETGRVDAY2" drops it to $59.99. With free shipping, that's the lowest total price we could find by $20. It supports 16 download and four upload channels, speeds up to 680Mbps, and is certified for Comcast Xfinity, Time Warner Cable, Cox, and Charter, among others.