Motorola SurfBoard SB6141 Cable Modem for $39.99

Walmart is offering the refurbished Motorola SurfBoard SB6141 DOCSIS 3.0 Cable Modem for a good price. If you are renting a modem from Comcast it might save money to buy your own modem and resell it after use

Next best price on Google is $69.95 shipped

Walmart Refurb Price is $39.99

Free shipping on $50+ purchase

You can pickup in-stores

Careful with the refurbs. If it's ever been on Comcast's network they won't let you connect it again under a different name.