Just use the free tier? You’re notified when you’re approaching the free limit.
AWS, anecdotally, has removed 5k++ mistakes I’ve made with little question.
(One example they forgave due to my carelessness: ECS and Fargate service with logging to CloudWatch but with verbose logging on. The bill was 8k that month for just CloudWatch usage)
I have only asked for one refund, which was clearly the result of a bug on Amazon's part, and they haggled the whole way. They were quick to a 50% refund and slow to a 100% refund.
I've never had a refund denied. One was for 20k on an account that only billed that much monthly. If it's an honest mistake they'll wipe it if you have any history with them.
AWS, anecdotally, has removed 5k++ mistakes I’ve made with little question.
(One example they forgave due to my carelessness: ECS and Fargate service with logging to CloudWatch but with verbose logging on. The bill was 8k that month for just CloudWatch usage)