I compared grocery prices at Costco, Walmart, and HEB for a family of 4. I was shocked Walmart wasn't a better bargain.

• Inflation is cooling overall, but food prices have been more stubborn.
• To combat high prices, some people are seeking out the best deals at different stores.
• I went to three stores to see where I could find the best prices for my family of four.

While inflation has come down quite a bit since its peak in June 2022, one place where Americans are still being hit hard is at the grocery store.

Walmart CEO Doug McMillon said food prices had not recovered in 2023 as much as other areas, during an interview with CNBC's "Squawk on the Street" on December 6.