1. Spirits
And to top our list, alcohol is the best selling item at Costco. It is no surprise that spirits are so popular as a Costco purchase; afterall, the massive assortment of booze they stock is quite impressive.
That was our list of 11 best selling products at Costco. Next time you go, make sure to buy some of their poppyseed muffins; that is, if you aren’t too full from trying all of those free samples.
