I have a client who gets a good portion of their sales (~40%) from Google Product Feeds, and for those they want each (Product X Quantity) to have it’s own SKU, as they often get 3 listings in a given Google shopping query, i.e. 2,4,8 units of a given product. However, we are worried about this creating duplicate content on the search side. Do you know if we could rel=canonical on the site without messing with their google shopping results? The crux of the issue is that they want the products to appear distinct for the product feed, and unified for the web so as not to dilute. Thoughts?