I’m not sure about the Mac OS side, but at least on iOS there’s a specific entry in the information section for in-app purchases that can be expanded into exactly that pricing list.
But it's always listed as something like "Premium Features" or "Monthly Subscription." Those descriptions don't tell what I'm getting. So then it's usually download the app, try to figure out which are the premium features and which are baked into the app. It's a mess. And I get it, it's not really the dev's fault, but the system is completely broken.