Costco offers discounted fast food gift cards that can save you 20% instantly. Find out which ones are worth grabbing.

Shoppers appreciate the wide variety of services Costco offers. "Got my home mortgage through Costco. Got my cell phones ...

Your Costco Shop Card will be emailed within two weeks after sign-up to qualifying members. A physical membership card is not required to shop online or receive your included gift card.

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.