Amazon offers its Prime members the Netgear DOCSIS 3.0 Cable Modem, model no. CM400-1AZNAS, for $46.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $8.74.) That's tied with our mention from two weeks ago and the lowest total price we've seen. (It's a current best by $6.) It features data transfer speeds of up to 340Mb/s and is certified for Comcast Xfinity, Time Warner Cable, Cox, and Charter, among others.