Use Your Costco Credit Card at the Pump
Use your Costco credit card at the Costco pump and eligible stations worldwide to get 4 percent cashback. This offer is good for up to $7,000 of gas per year, with 1% cash back thereafter.
Don’t Shop Alone
If you need a little help staying within your budget when shopping at Costco, bring a friend along on your next trip. Tell your friend you’re trying to save $100, and ask him or her to encourage you to buy only what you need. If your friend also happens to overspend regularly at Costco, make it a game. Whoever saves the most money has to buy lunch at the store’s food court.