We are developing a SAAS on top of AWS.
We need to create subscriptions charges tied to metered usage of AWS. Set charges for any usage dimension that Amazon Web Services measures (e.g., per GB-Month of storage used, per GB of all data transfer in, etc.).
For example charge customers $0.50 for each GB of data transferred in using Amazon S3, and $0.40 for each GB-month of storage used in Amazon S3 – even though your actual costs to use Amazon S3 are $0.10 for each GB of data transferred in and $0.15 for each GB-month of storage used.
We need to integrate this solution to a subscription management sowtware such as Chargbee, Recurrly or other you might suggest.