About Pay with Amazon for OpenCart
To enable Pay with Amazon, you need to create an Amazon Payments merchant account. The Amazon Payments account is where you find the access keys that you need to configure Pay with Amazon, and is also where you configure your deposit account so that you can receive payments, and where you can view reports. Register for your Amazon Payments account here.
More information about Pay with Amazon, including pricing, can be found at
Note: Pay with Amazon is not the same as Checkout by Amazon (CBA). If you have accounts with either of these older services, you still need to register for a new Amazon Payments merchant account to use Pay with Amazon.