How much are we paying for ami image storage?

AMI (Amazon Machine Image) storage costs are not directly itemized as a separate line item in your AWS billing. AMIs themselves don't have a standalone storage charge - instead, the underlying snapshots that make up the AMI are what incur storage costs.

When you create an AMI, it creates EBS (Elastic Block Store) snapshots of the volumes. These snapshots are stored in Amazon S3 and are charged at the standard EBS snapshot storage rates, which vary by region.

To see how much you're paying for AMI-related storage in your billing:

1. Look for EBS snapshot charges in your AWS Cost and Usage Report (CUR) or billing dashboard
2. Navigate to the EC2 service costs and look for snapshot storage charges
3. You can identify which snapshots are associated with your AMIs by checking the snapshot details in the EC2 console

The billing information you'll find for AMIs in your Cost and Usage Report relates to the software usage charges (shown in the lineitem/Operation column) rather than storage costs. The Platform details and Usage operation fields help you verify charges for running instances from specific AMIs, but storage costs for the AMI snapshots appear under EBS snapshot storage charges.

To reduce AMI storage costs, you can deregister unused AMIs and delete their associated snapshots.
Sources
Finding AMI billing and usage details - Amazon Elastic Compute Cloud
AMI billing information fields - Amazon Elastic Compute Cloud
Verify AMI charges on your bill - Amazon Elastic Compute Cloud