Get shipping rates from US stores

Hello, we have 500 on-line US stores. You need to visit each store, find their shipping rates information and fill out a spreadsheet for each store in the following format: Country(Region) Method Shipping Rate Based On (price, weight, qty, etc…) Range Multiple by (qty times or weight times...) Add to total value (flat fee) Url You need to make sure to check if store ships internationally - our main goal is to find international shipping rates