Order of magnitude? 1Gbit on amazon costs 22k/month. Even an order of magnitude cheaper sounds pretty damn expensive, two orders of magnitude still isn't "cheap".
It's really easy to underestimate how big of a ripoff EC2 bandwidth pricing is.
1Gbit in Chattanooga, TN cost $350 a month. You gotta buy some servers and maybe a colocation fee. Way less than $22,000 a month. Actually, while I was looking that up, a recent press release says they're deploying 10Gbit to homes for $299 a month. Things may have improved on business side, too. :)
On the expensive end you'd be looking at around $600 for such at $NOT_AMAZON, and on the cheap end you'd get it for "free" because a plenty of hosts have excess bandwidth.
DO doesn't separately charge for BW or enforce any limitations AFAIK.
It's really easy to underestimate how big of a ripoff EC2 bandwidth pricing is.