About this project

Costco Index tracks and visualizes the prices of everyday essentials across U.S. Costco warehouses, making it easier to compare regional price differences, monitor historical trends, and understand how consumer costs change over time at a grass roots level.

Costco's low-margin, high-volume business model provides an interesting lens on retail pricing [1] [5]. Beyond household spending, this data may offer insights for investment research. Companies like Starbucks and Chipotle are exposed to changing ingredient costs, while hedge funds increasingly use alternative data to study market trends [2] [3] [4].

This project is not a national inflation measure. Prices may vary due to promotions, package sizes, membership requirements, and local availability.