Modify existing Java Amazon Product Advertising API program

You - experience with Amazon Product Advertising API brings you to the top of the list! Me - I have a fully functional Java program that accesses Amazon data via Product Advertising API. Currently it performs by utilizing ItemLookup method for a single ASIN at a time. What I need - modify an existing program to handle batch request of 10 ASINs for each ItemLookup request. This will require to modify my current model to store some flags that I currently have (i.e if item is not available, update DB accordingly). It works for a single ASIN but now needs to handle 10 ASINs in a batch. I can probably write this code in about 5-6 hours (not a good Java developer hehe). For you it should be less than 2 (I'd hope). I will provide data SQL, source code and temporary access to Product Advertising API. I'd rather deal with somebody who has done work with Product Advertising API than spend time on explaining how it works and what kind of tricks I have in my code to accommodate it. Looking for a quality implementation!