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.
Currently, there are two new plugins in works. But, one of them is coming out very soon. Plugin called GD Amazon Fusion will get first beta version in about 2 weeks. Plugin will have only Pro edition, no free version for this one. Here is a bit more about it.