Already turned it off and will compare the numbers with the two weeks or so that it was on. Didn't have much of a choice as I did not want to continue racking up a larger bill from the abuse traffic being blocked.
No CDN that I have used (and we've used Panther Networks, CDNetworks, Cotendo, EdgeCast, Akamai and Fastly) has ever charged us for ingress.
Usually you pay for egress from edges and whatever is going between the edge and origin.
So it would be good to get that clarified so we know.