How do 5M page views consume 80TB of traffic? That sounded like a lot, but calculates out to 1,600KB per page view. That's a lot of JS and images on every page :)

A few years ago when I hosted what felt to me like a popular site, I was serving serving > 150K page views a month from a 1.5Mbps adsl uplink. With that said, back then you could gzip everything and there was no letsencrypt or CloudFlare walls across the board (didn't exist yet).

Good thing bandwidth is easier to come by these days.