So I have an excel form that my supplier gave to me that gives me the prices of shipping to different regions of the world base on weight of the package. How do I set up the shipping zones in shopify? what I have been doing now is setting up different rates for each country. So I have one rate that is 6 dollars where the conditions are that the product weighs 0-0.2 kg and one rate that is 8 dollars for 0.2-0.4 kg and so on. This takes extremely long to set up, so is there a way I can just give shopify the price per kg for each region and than it calculates the shipping automatically for me?