You can get a Costco Gold Membership for $20 right now. This discount is available through Stack Social, and must be purchased by December 22. Customers can purchase up to two memberships each, one for themselves and one as a gift for another household.

Those who join Costco under a current promotion will have to shell out the typical $65 membership cost upfront, but will receive a $45 gift card approximately two weeks later — bringing the out-of-pocket membership expense to just $20. (Staten Island Advance/Jason Paderon) Jason Paderon

Costco's Gold Star and Executive Memberships are available at a discounted rate through StackSocial. The limited-time offer includes a $45 Costco gift card, reducing the effective annual cost for new members.