Costco shoppers all have their favorites. But if you're looking for a hidden gem, check out these four products the next time you're at Costco. Costco sells some of the most affordable contact lenses ...
If you prefer to shop in-store at Costco with a credit card, then make sure you have a Visa-backed credit card. Here are CNBC Select's picks for the top credit cards for shopping at Costco.