I haven't been professionally involved in AWS in some time, and never was involved in pricing.

Personally, the only thing I know of that is a true deal vs. competition is cold storage of data. Using the s3 glacier tiers for long term data that is saved solely for emergencies is really cheap, something like $1/100GB a month or less.

AWS is usually not the cheapest EVER when it comes to offerings like EC2. If you aren't doing cloud-native or serverless at AWS, you're probably spending too much.

Glacier Deep Archive is around $1/TB/month. This is also about the good deal price for storage servers right now, although Glacier offers redundancy which storage servers don't.