I have a rackspace linux server with 512 MB of RAM and a Linux Micro instance on EC2 (it has 613 MB of RAM).
I wanted another bulkier instance for a new web app our company is deploying. I am planning to go with Amazon standard instance (which has 1.7GB memory, costs ~$10 if reserved for 3 years). A server with the same amount of RAM would cost me lots of money on Rackspace Cloud(costs $87), I don't understand why there is such a difference, Am I missing something?