We prevent way more than that from being added to the cloud bill by showing engineers cost estimates that enables them to make better decisions pre-deploy - e.g. when an engineer knows the IOPS option on their EC2 instance is costing them a lot, they're more likely to reduce that or not use that in dev envs vs just copy/paste what's on production. There's an ROI report on infracost.io that shows how we measure the cost prevention between the first and last commit on merged PRs.