Say I am serving 3 million requests of static and dynamic images per month from an EC2 machine (origin), and each image is about 15 KB, and my guess is that the approximate amount stored in the CloudFront cache will be about 15 GB of images, since 50% of the image requests are frequently repeated.
Using the AWS calculator, it says my monthly CouldFront bill will be only $4 per month.
$4 per month seems much too cheap, and I think I am missing some important piece in the cost puzzle?
On the AWS CloudFront Pricing sheet, I can't see how any pricing for CloudFront cache storage?
Is it possible that it is basically free to store 15 GB on the CloudFront cache? Or perhaps my understanding of the system is far off the mark?