We watch the AWS Cost Explorer https://console.aws.amazon.com/cost-management/home?#/dashboard to manage our on-demand, reserved and spot costs.
AWS Cost Calculator
It would be ideal if we could plan and track costs as pseudo Costs as Code (tied to Cloud Formation/terraform scripts). There is a way to export estimates in the https://calculator.aws/#/ using https://docs.aws.amazon.com/pricing-calculator/latest/userguide/export-estimate.html
For example a IaaS T3a.medium 2vCPU/4Gb 100GB EBS DT outbound 10GB no peak scaling reserved 3y no upfront, snapshot weekly is $82/month
below is for 3-6 instances with a 4h peak per day to 6
Export and Share
Export to CSV
|The spreadsheet does not break out the costs though|