The short list of grocery stores cheaper than Walmart is genuinely short: Costco, BJ's Wholesale Club, Lidl, Aldi, WinCo, and H-E-B. That's it. Every other major chain shoppers encounter regularly costs more, some by a little, some by a lot. A Consumer Reports basket comparison published two weeks ago put precise numbers to those gaps, using Walmart as the price baseline across six metro areas, and the findings hold consequences for how much any household actually spends on food each year.