Trader Joe's is 24.6% more expensive than Walmart, a new Consumer Reports study has found, while Aldi and Costco rank among the cheapest grocery stores in the US. The report, which compared prices at dozens of retailers across six cities in late summer 2025, used Walmart as its baseline to highlight where shoppers can find the best deals.
With food prices still high as of March 2026, the findings come as welcome news for budget-conscious Americans. Warehouse clubs dominate the lower end of the scale, hardly a surprise given their bulk-buy model.
