Would you prefer Walmart over your regular grocery store and trust it?

yes because
USP of Lowest price: Walmart has been known for its unique selling proposition of offering goods at “Every day low prices” and the same prices are offered throughout the chains. Products are competitively priced and Walmart bargains aggressively with the manufacturers to pass on the benefits to the end customers. “Black Friday” is one of the famous events of Walmart offering products at throw-away prices. It is one of the most successful strategies of the company which is being copied by retail giants all across the world.
Broad products assortments: Walmart deals in large assortments of goods and the broad SKUs (stock keeping units) not only help the company in retaining its customers but it helps them in playing over volumes for profit and for offering products at lowest price.
Operations: Managing such a huge retail chain is not easy and cannot be done without operations management. As such, Walmart gives special attention to the way it operates so that the consumer gets his products very fast and the shelves are filled at all times. Walmart serves millions of customers each year and it has a solid supply chain and operations team to manage the same.