I recently had the pleasure of visiting northwest Arkansas. If you have the chance, go—not only to experience the beauty of the Ozarks, but to see the world’s only Walmart convenience store. This store offers groceries, a gas station, and a counter for a local business, Bentonville Butcher & Deli. The difference between Walmart convenience stores and other convenience stores: Walmart prices (read: excitingly low). Those low prices mean that the more these stores spread, the more lives will improve.

I realize that there are ongoing arguments about whether Walmart improves or reduces people’s welfare. For instance, some argue that Walmart reduces the number of jobs in locations where they open, while others find that Walmart creates more jobs overall. Some believe that when Walmart enters a town, competitors are forced to lower worker income or close. Others claim that the benefits of lower prices may result in higher real wages, even in the retail sector. Some write that Walmart costs taxpayers huge sums as their employees receive federal support. Others insist that these programs are operating as intended: boosting employment among low income families who would otherwise be jobless.

While those issues are still debated, one thing is clear: When we have access to cheaper goods, our quality of life improves because we can buy more with the same amount of money. This is especially true for the poor who spend a higher percentage of income on household goods and food. For them, daily savings on these items are necessary for survival. Shopping at Walmart leaves them with more money, which they can use to feed their families, pay for additional tutoring for their children, or work less as they can afford more leisure time. In that way, few forces have improved the lives of Americans, particularly poor Americans, as much as Walmart.