Which hoster provides bandwidth for 50 bucks / terabyte?
0.02$/GB which comes out to 20$ per TB and the first TB is included in the price.
As long as you stay away from well-known IaaS platforms, there are plenty of places where you can get bandwidth for less than $10/TB. Lowest I've seen is $1/TB. Having actually used a few hundred TB with them, it's a bit slower but not that bad.