It could be good for your needs. I only have two things I suscribe to on Roku. I also have Prime video.
I use Amazon a lot because it is great to have deliveries on items I need at home because of health issues. Particulary in winter months.
I kept Sling Blue for 4 years. So, I was okay with it. I was just not using what I was paying for.
We use Amazon a lot, too. During Covid we found out how easy it is to buy a lot of routine household stuff and be free of having to cart it home.
We watch a lot of movies on ‘Prime’, because so many are free with the subscription, and we never see movies in the theater; so even when we have to rent something, it’s a good deal.