That's the Premium plan (for $1000) Edit: it's for 5 TB

50TB transfer on all paid plans.

50gb is the s3 storage on pro plan.

https://aws.amazon.com/cloudfront/pricing/

yes but only 10M requests

How many visitors do you actually think you’ll get?

Point is 50TB isn't the limit. It's 50TB or 10M requests. Visitors aren't relevant.