> Bandwidth at AWS costs about 50 times as much as with Hetzner for example.
It's actually closer to 70x
Hetzner: 1.25 USD per TB (after 30 TB free per server) [1]
AWS: 90 USD per TB [2]
So, 100 TB at Hetzner will cost you 125 USD (not counting the 30 TB free). You would pay 9000 USD at AWS.