The number above was a thousand dollars per month per 10gbps, and AWS would charge more than a hundred thousand dollars at the listed $0.05/GB price.
Nonetheless it does give a ballpark for the cost of bandwidth being a lot lower than people think. A 10G internet connection would be cheaper to provide in some parts of that equation and more expensive in others - should end up in the same ballpark.
And honestly 10 cents per Mbps sounds kind of high for raw transit, I interpreted it as a price for actual utilization.
Add 10-25% profit for that company to get closer to true "raw transit" pricing from the carriers directly.
But sure, if you want citations for $0.10 per Mbps in bulk for transit, that's easy to find/beat.
https://he.net/ "Get BGP+IPv6+IPv4 for $0.06/Mbps!"
https://www.fdcservers.net/ip-transit Europe, North America: 10Gbps $499/month
And telegeography just sells information, but they had a blog post that's now three years out of date reporting that "In Q2 2021, the lowest 10 GigE prices on offer were at the brink of $0.09 per Mbps per month. The lowest for 100 GigE were $0.06 per Mbps per month."
You need to factor in that your utilization won't be 100%, but if you're comparing 6 cents for a Mbps and and 5 cents for a gigabyte, then the exact point where AWS is 100x more expensive is when your line is 36% utilized.