Guides

Grocery price guides

Short, plain guides to reading grocery prices, each built on something Cartworth measured rather than guessed.

Are Instacart prices higher than in store?

Same product, same store, same week: Instacart ran a median 13.3% above the shelf price, up to 20%. Some stores match the shelf to the cent. Our measurements.

How to compare grocery prices by unit price

Unit price is the only fair way to compare package sizes. How to work it out, and six real label traps that make a grocery price look far cheaper than it is.