Set up amazon account for simplepay
Instructions taken from http://patshaughnessy.net/2010/11/20/how-to-integrate-amazon-simple-pay-into-a-rails-3-app
If you already use S3, EC2 or other Amazon web services, then skip to step 2. Otherwise, go to: http://aws.amazon.com, click “Sign Up Now” and enter your Amazon email address and password. Then you need to create a new web services account by filling out the “Contact Information” form and agreeing to the “AWS Customer Agreement.”
There are actually two different Amazon Payment Services sites: sandbox and production. The sandbox allows you to test transactions from your web site without using real money. You will have separate account IDs for Amazon Payments sandbox and production.
For now, let’s start with Amazon Payments Sandbox; open: https://payments-sandbox.amazon.com
You should see the word “sandbox” in the Amazon Payments logo at the top left:
Later when you are ready to deploy your Rails app and want to collect real money you’ll need to repeat steps 2, 3 and 4 using the production Amazon site: https://payments.amazon.com
From the Amazon Payments home page, click “Your Account” and then login again using your Amazon email address and password. After you enter your Amazon credentials, you’ll need to sign up and enter your contact information again, this time for Amazon Payments. Once you sign up, you should be redirected to your account page, which will display your account balance and recent transaction information.
Now for the confusing part: you need to sign up for a third time; this time for the “Amazon Flexible Payments Service.” To do this, click “Developers” and then click the “Sign Up For Amazon FPS” button on the right side of the page:
