Very good points yet a clear pricing tool should be open. The very mechanism of jacking up pricing function of RAM is not visible. Look the amount of time the Accenture researcher Huan Liu had to spend to come out with some data, which are just some simple scenarios he had to assume to make sense. The same providers can be anywhere from 19% to 500% the EC2 price. Such a wide gap is simply not helpful. It is like saying that car costs anywhere from $100 to $120,000.