A great idea for an app would be to create something that integrates cost of product, shipping costs, price and discounts all in one spreadsheet type format. To truly accurately keep track of cost (including shipping) you constantly have to go back and forth and check and update. The global pricing rules are too broad. It shocks me that oberlo hasn't done a better job at this or that someone hasn't created an app to address this. Let me know if you have a solution!