1. The optional exercises for an online SAP course will incur costs for using Amazon Web Services (AWS) resources like Amazon EC2, but the course authors do not have details on pricing and billing.
2. The document provides links to AWS pricing calculators and FAQs to help users understand and estimate potential costs. It also explains how to terminate AWS instances and deactivate solutions to avoid ongoing charges.
3. To fully cancel an AWS account and stop any future charges, the document directs users to AWS support pages with cancellation instructions. The SAP course authors cannot directly assist with billing or account cancellation issues.