This. Firefox's dev tools says 3.38KB transferred (including redirect and favicon). Taking that into account, it's closer to 5 billion page loads.

Well if he’s getting 6 million a day that’s a little over 2 billion hits a year. Maybe he’s overprovisioned an AWS instance or something.

I think he's including the transfers from twitter in the 55kb (which is over 50k of it), which wouldn't cost him anything personally