Netgear CM500-1AZNAS (16×4) DOCSIS 3.0 Cable Modem for $44.99 shipped after clipping the extra $10 off coupon. Here is a screenshot for reference. This is a relatively high-end consumer cable modem at up to 686 Mbps download speed and is on the approved list of many major cable ISPs. Having your own cable modem often means you do not have to rent one from your internet service provider (ISP) with a monthly rental fee, which saves money in the long run. Most places have it for about $67.