Amazon.co.uk Market place Shop Scraper / Trawler

I need a scraper / trawler that will get the contents of [login to view URL] marketplace stores. I want to be able to enter the URL of the store and for it to return all items that the store has for sale. The applet must be able to get around the page limit of Amazon. This is very important, I would like you to assure me that this will be done. I would like an idea of how long it will take to collect 50,000 items over a 15mbs internet connection. The data must be collated into excel form, I am only looking for the following data; Book Title ISBN 13 New price (Including shipping) Used Price (Including shipping) This is a very simple project, the only point that I need clarification on is how you plan on getting around the Amazon page limit? Just to confirm, this is for [login to view URL] and not Amazon.com. I would also like you to be honest with how long you need to deliver this project as it is urgent and will have a bearing on who gets awarded the project. Please ask any questions you may have Thank you