This product allows for discounted group purchases but it does not require groups to all order the same country or text. The quantity discounts will be applied once the items are in the cart. The quantity discounts will add up all versions of this products in the cart so you can order 15 versions with different countries, front text and back text and the 15+ discount price will be applied. It does NOT require, say, 15 of the same exact shirt. It just requires 15 versions of shirts from this product page. You should add shirts one by one to the cart with the correct country, shirt gender, front text and back text.