Yes, AWS Budgets allows you to set cost and usage thresholds and get notifications by email or Amazon SNS topic when your actual or forecasted charges exceed the threshold.  You can create a custom AWS Budget filtered for the CloudFront Service and set the budget threshold amount to the CloudFront on-demand usage covered by your CloudFront Security Savings Bundle to be notified once that threshold has been exceeded.   For more information about budgets, see Managing your costs with AWS Budgets and Creating a budget in the AWS Billing and Cost Management User Guide.