Delivering one pizza, or delivering two pizzas to the same address doesn't cost any more. But what you usually get where I live, besides the "delivery fee" and

Delivering one pizza, or delivering two pizzas to the same address doesn't cost any more. But what you usually get where I live, besides the "delivery fee" and the tip, is an additional surcharge on each individual item. This is not visible because it's included with the price of the item. To figure it out you have to compare the app's menu with the real restaurant's menu.