# The difference between the cheapest and most expensive stores was over 33%, the report found.

*business · news · 2026-04-10 · The Arizona Republic*

## Key points

- Costco had the lowest grocery prices, at 21.4% cheaper than Walmart.
- Six grocery chains were found to be cheaper than Walmart, including three in Arizona.
- Whole Foods was the most expensive, with prices 39.7% higher than Walmart.
- Trader Joe's prices were 24.6% higher than Walmart, making it among the priciest options.

**Companies:** Walmart, Costco, Aldi, WinCo Foods, Target, Safeway, Food 4 Less, Kroger, Trader Joe's, Albertsons, Whole Foods
**Countries:** United States

[Read the full story on The Arizona Republic](https://www.azcentral.com/story/grocery/stores/2026/04/10/walmart-costco-price-comparison/89520837007/)

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