What kind of numbers do you want? Last month we used 200TB+ in bandwidth across all our sites, no bandwidth charges from CF.

120TB of that is our CDN backed by a Cloud provider, we had to only pay them for 3TB in bandwidth charges.

During peak traffic they serve 35% of our pages because of their cache, with some site improvements we will be able to up that to 60% soon.

Edit: I must add that we are on the Pro plan and do use multiple paid features like Workers and Load Balancers.

Why would we care how CloudFlare handles that behind the scenes? They offer an amazing product for the value. Why shouldn't we take them up on it?

Besides its not like we're not paying them anything, our monthly bill with them is $1k+

By that logic, every one who bought Teslas in the beginning helped pay for the later customers. That's just how almost all industries work - insurance companies being a big one.