Earlier quoted context omitted.
IP transit costs something like $350-$700/mo for a Gbit. Amazon are certainly getting better rates, so even with equipment costs I doubt they're spending much more than $0.005/GiB. Their pricing starts at $0.15/GiB. (Not to single out AWS, the other big providers are much the same.)
I'm below $100/1Gbps 95% with more than one provider as a small player
Can I ask, are you in a data center? US or Europe?