I spend $40 shopping at Aldi for two on a biweekly basis, and I took that grocery list to Walmart. I bought similar items at Walmart and compared prices between the chains based on cost per ounce.

I took the same weekly grocery list and $150 budget for my family of four to Aldi and Walmart. Many prices were similar, but Aldi generally had the items I needed for less. Even though my Walmart haul ...