I have several S3 buckets in my AWS account.
The total size of them is about 500GB.
Why do I see per GB - next 450 TB / month of storage used
in my bill?
The total size of the buckets in the APN1
region is below 1TB, which is far smaller than 50TB.
I followed this post to use aws s3 ls --summarize --human-readable --recursive s3://<bucket_name>
to calculate all the sizes of the buckets.
Here's the article that tells you how to convert usage byte-hours to billed GB-months.