What I wanted to say ( :) ): as a user there is no obvious link between cost and usage. (Vs phone when you are billed by the minute which is easier to "understa

What I wanted to say ( :) ): as a user there is no obvious link between cost and usage. (Vs phone when you are billed by the minute which is easier to "understand") How can a user know that browsing a single page will cost him more than a whatsapp (video) call before doing it?