Your question is very vague. A Roku TV is a TV you can buy at various stores such as Target, Walmart, or Best Buy. These TV’s are made by companies such as ONN, TCL, Sharp and Hisense. They range from $200-1000 or more depending upon the model. From within the Roku operating system there are several free channels (apps) to watch shows and movies. There are also paid channels that are billed through a subscription. Can you please elaborate
There is no charge for a Roku account. There is also no charge for linking a Roku device to a Roku account. The Roku account has some free material. Channels or apps such as Netflix, Hulu, Disney+, ESPN+, Amazon Prime, etc... all have a charge for a subscription.
There are no monthly fees for watching free channels or for using a Roku device. You only have to pay for subscription channels like Netflix, cable-replacement services like Sling TV, or movie and TV show rentals from services like Apple TV.