That depends on you, your risk tolerance, and, of course, the economy. But there are several factors to consider when it comes to investing in this stock. Costco has a unique business model that stands out from other retailers. Costco doesn't just compete on margins, it makes money by selling memberships. Costco does perform well during economic slowdowns. In fact, the company reported an 18% increase in net sales in 2021 from 2020 despite challenges from the COVID-19 pandemic. Some of the drawbacks of investing in the company include a high price-to-earnings ratio and how slowly it is moving into the online marketplace.