We had a commit that was like three orders of magnitude more and our price was 1-2c for cdn and 2c for tier1 cloud (but only “partner” networks, the rest was list). That was after us threatening to leave (and having capability to do so). So either you are mistaken or your am really really likes you.
Again, we got quotes from Fastly, Akamai, and AWS. Our commit is/was $1500/month (we're on fastly now). Fastly gave us like 6 month free to switch, both bandwidth and requests.
Our bandwidth is less than .001/GB with like a $1500 monthly commitment in AWS. Fastly was even cheaper (which is why we're using fastly).
Call you AM and talk. It's not hard, and it'll save you a ton of money.