To add products from Amazon you can use built in bookmarklet. This bookmarklet allows adding products and creating posts with the selected product. Default and custom post types are supported for this operation. Example is for Amazon.com, but it works of any Amazon and in any browser.
Data retrieved by GD aZon FUSION plugin is got through Amazon Product API using CloudFusion library. Amazon has limited what types of data you can request and what kind of response you can get. Amazon don’t allow for all data they actually have to be used through API.