Pay by Amazon Checkout Integration - NopCommerce 2.4

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:

I have a amazon seller account and want to add the 'Pay with Amazon' payment gateway. Example here:

Our site is on NopCommerce (2.4) and therefore would like it developed as a plugin. If someone has already developed it, I will happily pay.

I need this ASAP

Additional Project Description:
06/28/2013 at 15:12 BST
Edit: The exact product we need integration with is "Checkout by Amazon", as here -

Skills required:
.NET, Amazon Web Services, ASP, eCommerce, Software Architecture
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