March 27, 2014, Amazon announced prices cuts for their services: http://techcrunch.com/2014/03/26/in-response-to-google-amazon-announces-massive-price-cuts-for-s3-ec2-and-rds/
For the convenience, I created theses pages showing some previous pricing and new pricing side by side.
Standards: Tokyo(Asia Pacific) Region for all services, On demand instances for all services, PostgreSQL for RDS, Multi-AZ Deployment for RDS.
- Minyeong Jeong(@kkung): Added S3 page.