Retail Competitor Price Shopping

I would like to have a program developed that take the price for approximately 100 items at approximately 75 stores and compare that price against the same item at two other competitor stores. This price scrubbing program would need to provide prices for the like items (with different item or model numbers) from the three retail stores on a weekly basis. Our company would provide the store location, item description, item/model number and the internet URL for each item that we would need a price comparison for. The program would need to be designed in a way that we could easily add other items, other store locations, and additional comparison retail competitor stores. Our company can provide a template of the price shopping report that we would need to receive each week on Sunday before the week starts.