Xfinity charges roughly $10 per month ($120 a year) to rent a TV box. Depending on the system, you might also have a nearly-$10 HD technology fee tacked on. All those small payments start to add ...

Customers can opt to pay extra to add an X1 set-top box to their subscription to get features like Enhanced 4K, Multiview, Odds Zone and integrated search with the Xfinity voice remote.