Trader Joe's 24.6% More Expensive Than Walmart as Aldi and Costco Named Among Cheapest US Supermarkets

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.

The Cheapest Grocery Stores in the US

According to the study, Costco Wholesale tops the list, with prices 21.4% lower than Walmart. BJ's Wholesale Club follows closely at 21% lower. Lidl is 8.5% cheaper, Aldi 8.3% cheaper, WinCo 3.3% cheaper, and H-E-B just 0.2% cheaper.

These figures are national averages, but regional differences exist. For instance, Costco is 37% cheaper in Boston but only 17% in Virginia Beach. Discount chains like Lidl and Aldi, with their European-style efficiency, offer consistent savings on essentials.

WinCo's no-frills model requires customers to bag their own groceries and limits payments to cash or debit, cutting operational overheads. H-E-B gains an edge through regional sourcing and deep community ties, which help negotiate better supplier deals.

In a recent price check, Aldi's raspberries cost $2.99 (£2.20), compared to $7.99 (£5.90) at Trader Joe's. Organic milk at Aldi is $4.25 (£3.20), while Trader Joe's charges $5.99 (£4.50).

The More Expensive Options

On the flip side, Whole Foods is the priciest, 39.7% more expensive than Walmart. Shaw's follows at 31.9%, El Rancho at 30.1%, and Jewel-Osco at 29.7%. Trader Joe's, despite its cult following for unique items, lands at 24.6% more expensive. This might raise eyebrows among fans who see it as a budget option.

Other notables include Albertsons at 24.8% and Vons at 26.6%. The study notes that prices vary due to factors like rent, wages, and competition.

Higher costs often arise from elevated minimum wage requirements, steeper commercial rents and property taxes, plus longer distances from distribution centres, which inflate logistics expenses. In wealthier cities, retailers sometimes test higher pricing thresholds, and areas with fewer competitors enable sustained markups without pushback.

'The best environment for consumers is one where a healthy retail mix keeps pricing competitive and selections robust,' said Brian Vines, deputy editor at Consumer Reports. Regional variations can be stark; Whole Foods is 57% more in Virginia Beach.

How Shoppers Can Save

Consumer Reports advises mixing stores to maximise savings – buy bulk at Costco, produce at Aldi. Many Americans already shop at two or more retailers weekly. On X, markets analyst Sai Shiva noted that Costco takes the crown thanks to bulk pricing and private labels.

Using loyalty cards and checking sales is key, as the study included those discounts. The report underscores the value of warehouse clubs and discount chains in keeping costs down.

As inflation eases but prices remain elevated in 2026, knowing where to shop could save households hundreds annually. Costco and Aldi stand out as go-to options for the cheapest grocery stores.

The USDA predicts food-at-home prices will rise 2.5% this year, slightly below historical averages, providing some relief amid ongoing pressures.