Labor costs, rent, and other overhead expenses also play a role in pricing. Additionally, consumer preferences and market competition can influence the pricing of pizza in different regions.

While it can be tricky to estimate how many slices people will eat, you don't want to underestimate anyone's appetite, either. Three slices per adult and two slices per child offer a good base to start from when you're estimating how many pizzas to order.

Right now you can watch Supernatural on Netflix.

Watch Supernatural - Stream TV Shows | HBO Max.