@Brainy, Roku devices and TVs are free to use. There are many "premium" services that require a paid subscription (e.g., Netflix, Paramount+, Peacock, etc.). They may offer discounts, but you'd have to check with each service.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.