Family-Size Packages Often Cost More Per Ounce—The Shelf Tag Number That Proves It

Amy’s family-size frozen cheese enchilada boxes line a grocery store freezer shelf. Examining grocery pricing strategies highlights how unit numbers on shelf tags help shoppers determine true value when buying bulk or family-size items. Shutterstock.

Buying the biggest package at the grocery store usually feels like the smart way to save money. More food should mean a lower cost per serving, especially when a product is labeled family-size or value-size. But that assumption does not always hold up when you compare the numbers on the shelf. Grocery stores use unit pricing to show how much a product costs by ounce, pound, quart, or another standard measurement. Checking that smaller number can reveal when the supposedly better deal is actually costing you more.

The Unit Price Is the Number Shoppers Often Miss