In order for us to keep track of our margins, we want to know how much each inventory item actually costs.  That includes the shipping, duty, etc.  If we don't add it into the inventory, then the reporting in QB does not give you as good information.  It s a bit more work to do up front, but then I can do analytics, like compare my average pricing vs my sales price to make sure I am charging enough for each item.  We also have US exchange that fluctuates as well and our shipping and duty is quite expensive so it is material to us.  If these charges are not that much, it might not matter. I think you have to evaluate whether it is worth it for you or not.