Get the most out of your Costco membership with these pointers:.Look for items ending in $0.97, because that means they have been discounted.Kirkland Signature, Costco's exclusive house brand, often ranks better than many of their name-brand equivalents.After you've filled up your cart, be sure to fill the tank in your vehicle. Many Costco stores feature a gas station.Costco shoppers can save big on gift cards.Costco Pharmacy offers lots of generic drug brands priced at $10 or less for a 90-day supply.If you notice an asterisk on the price tag, that means that product is being discontinued at Costco.One of Costco's biggest perks is that they will take almost anything back