Your analogy is good, but incomplete. There are a lot of items in COSTCO, such as berries, that are much less expensive then supermarkets. Some items you can throw out almost half of what you bought and still save money. Price a small box of Splenda packages at your grocery store and compare it to the big box at COSTCO.
The DDP is the same. Bicker's numbers show a guest will generally break even if they skip appetizers and desserts. A guest who order appetizers and desserts can skip the CS and more then break even.
The DDP is the same. Bicker's numbers show a guest will generally break even if they skip appetizers and desserts. A guest who order appetizers and desserts can skip the CS and more then break even.