Amazon bandwidth prices are utterly insane. Pretty much every reasonably hosting provider out there will be below 20% of Amazon on bandwidth prices even with metered bandwidth, and going down to around 2% of AWS bandwidth prices (still for metered).

Basically, if you're shifting lots of data out of AWS, it very often pays to rent some cheap boxes elsewhere to use as caching proxies. Every TB of AWS bandwidth you can cut trivially finances an extra server and still leaves you with savings.