If you use various streaming services, JustWatch is a useful tool to consider. Search for any movie or show, and JustWatch will tell you where you might stream it. You can see all of your Rent and Buy options, as well as prices, and click through to any provider you want to patronize.

If you create a free account, then you may also create watchlists and receive recommendations, but I think it’s useful for streamers even without signing up.