Hi @adkelley , thanks for the comment. If you get charged, the amount you should have to pay should be minimal as you’ll only pay for the time that your storage is above 30GB, Free Cloud Computing Services - AWS Free Tier. To reduce your costs though, you can delete any old AMIs and only keep the most recent one, and also remember to destroy your terraform infrastructure when you’re not actively going through the book. But thanks for letting us know, we’ll update the disclaimer.