Dollar General (DG) shares drop as the company's second-quarter earnings came in weaker than expected. The company cut its 2023 guidance while seeing a 24.2 percent drop in gross profit and slumping same-store sales. Meanwhile, Costco (COST) shares are up as the big box retailer reported $18.42 billion in net sales for the month of August, citing the U.S. market as its weakest segment. Yahoo Finance Live analyzes what these results from discount retailers show about the state of the consumer.