[ddorian43]

I recall seeing ~300TB was requested to move off the Free plan. (it was a heavy image site)

Your bandwidth doesn't look like a normal scenario which they expect (unless you are imgur).

I'm curious how their Enterprise pricing works though.

2.5PB is ~300 years streaming of 720p video.

Example: In Vimeo Premium for $75/month you have "unlimited streaming", but when "unlimited" is reached it's $40/TB.