Cheaper by the Dozen

Cheaper By the Dozen is a phrase we use to describe a situation or item that comes in packs of twelve. It can be used to describe items that are sold in twelve-packs, like cans of soda or boxes of eggs, or it can be used to describe situations when twelve people are together, like a family reunion or a team of sports players. Basically, the phrase means that it's cheaper or more efficient to buy or do something in twelve-packs or with twelve people than it is to buy or do it one at a time or with fewer people.