Costco Wholesale allows members to purchase many types of products at a reduced price, including groceries, home goods, electronics, and even automotive supplies. All three types of yearly memberships -- Gold Star ($55), Business ($55), and Executive ($110) -- offer the same access to discounts. The Business membership lets a company add up to six employees to the same account for $55 each. And the Executive membership gives 2 percent back on purchases, up to $750 a year. For the average customer, Gold Star membership usually makes the most sense. In a price comparison test, Cheapism found significantly lower prices at Costco than at other popular retailers.