Go to StackSocial and sign up for a 1-year Gold Star Membership and Costco will send you a $20 digital Costco Shop Card to use in store or online.

Your Costco Shop Card will be emailed within two weeks after sign-up to ... Groupon Costco membership deal this January. Costco members have access to exclusive member-only deals on groceries ...

Learn more › We all know someone who brags a little too much about having a Costco membership ... when you sign up for your first year—at least until we run out, as we only have 50 available.