Starting November 1, S3 will be cheaper. Under the new model, Amazon will still charge 15 cents per gigabyte of storage per month. But, after 50 terabytes, the price falls further (see new pricing list). S3 is up to 70,000 storage, retrieval and deletion requests per second. If you see s3.amazonaws.com on the bottom of your browser, the data is getting loaded from S3.