Amazon EC2 adds the ability to easily query the billing information of Amazon Machine Images (AMIs)
You can now use the DescribeImages API to determine the billing product information associated with an Amazon Machine Image (AMI). By making it easier to obtain the platform details and billing information of AMIs, this release reduces the chances of erroneously launching instances from incorrect AMIs, and assists with inventory planning and reporting. Starting today, this capability is available in all AWS commercial Regions and AWS GovCloud (US) Regions from API and CLI. Visit our documentation page to learn more.
Source:: Amazon AWS