This stock could be a solid bet in any economic environment.Costco (COST +2.00%) has delighted shoppers for years with its dirt cheap prices on everything needed to keep a household running -- from food and other essentials to electronics. How does Costco manage to offer such deals? The company buys items in bulk, so it benefits from low prices -- and that means Costco doesn't have to charge high prices to make a profit on sales.The company's popularity has increased over time, resulting in a strong track r ...