Amazon Price Retrieval - MUST have experience with Amazon Product Advertising API

Hi, I need an application that can retrieve prices for several thousand Amazon products per execution. I need someone who is familiar specifically with the Amazon Product Advertising API. I need the program to read several thousand ASINs from a text file and call the appropriate API function (I believe this is "ItemSearch" - but this is what I need you to know or research). I need the data presented in a GUI table with 2 sections and I would like to see the streaming data *as it is being returned* and not have to wait for completion to begin viewing the data (retrieving data for several thousand items takes a few minutes). I also will need to be able to save the retrieved data from the top section of the GUI table to a text file when completed. I need the following data returned in *sortable columns* in the **top** section of the GUI table: Item Name, Sales Rank, Total Quantity Available, Lowest Overall Price, Lowest Used Price, 2nd Lowest Used Price, Difference Between Lowest Used and 2nd Lowest Used (you will need to calculate this field), Lowest New Price, 2nd Lowest New Price I need the following data returned in the **bottom** section of the GUI table (this data will have been already called, but the display will change as the different row in the top table is highlighted by the user): Seller Name, Seller's Comments Other Features needed: 1) The ability to filter offers by seller name, so that once all the data has been retrieved, I can view all of the offers for a particular seller for those items that have been retrieved. I would like to be able to store sellers names in an editable dropdown for this. 2) The ability to identify and present only those offers which are "Fulfillment by Amazon". This also would be a filter once all of the listings have been retrieved. This will be activated by a checkbox called "View only FBA listings". (There is a "IsFulfilledByAmazon" element that should make this possible) Final note: The Amazon API has a call limit per hour. I need the program to maximize the calls so as much data is retrieved as possible (i.e. retrieving 10 ASINs per call). Thank you!