AWS Price Reduction 42 - EC2, S3, RDS, ElastiCache, and Elastic MapReduce
aws.typepad.com/aws/2014/03/aws-price-reduction-42-ec2-s3-rds-elasticache-and-elastic-mapreduce.html
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
It is always fun to write about price reductions. I enjoy knowing that our customers will find AWS to be an even better value over time as we work on their behalf to make AWS more and more cost-effective over time. If you've been reading this blog for an extended period of time you know that we reduce prices on our services from time to time, and todays announcement serves as the 42nd price reduction since 2008.