Thanks, I wasn't aware of this, I'll ask the marketplace support about it.

Try to search for "EBS Optimizer" in the AWS console and you should find one of my tools most likely to be useful for most people.

If you run EC2 or any other services that use it under the hood, such as EMR, ECS or EKS, it's going to save you a few bucks. It's free of charge below about $14 savings monthly and charges up to 5% of the savings thereafter, $0.7 for each $14 it saves you.