Amazon Excel Database

Dear All, I have a list of 100s of ISINs (an ISIN is a unique identifier number, different for every book in the world, see [login to view URL]) in an Excel spreadsheet. They are all books I own and I would like to see what each book currently costs at Amazon.co.uk. I am also interested in selling some back to Amazon and would like to see the “TradeIn” value they can get on Amazon.co.uk. “TradeIn” on Amazon lets you sell books back to Amazon for a certain amount of money. “TradeIn” is not possible for every book but there are some that Amazon buys back (see http://www.amazon.co.uk/Trade-In/b/ref=sv_b_0?ie=UTF8&node=440443031 for more information) Ideally I would like an Excel Spreadsheet which provides me the data, linked up with [login to view URL]’s database to retrieve the data. I require the following fields to be populated on the spreadsheet: Title of the book, [login to view URL] price, [login to view URL] TradeIn price. I would be looking to run the spreadsheet on a daily or weekly basis, add new ISINs to it and delete old ones, so it needs to run fairly stable. I have an Amazon Webservices account, a developer token ID and everythings that’s needed in order to connect to Amazon’s database should that be needed. This information will be supplied once the project is being worked on. I have found a website which goes through a possible way how to do this project. It might help/give ideas, if you need any. (See [login to view URL])  Any questions in the meantime please let me know. Thanks Frank