Living Social is offering up new Costco members a 1 Year Costco Gold Star Membership for Only $55 - which includes a $20 Costco Cash Card, and coupons valid for a FREE 72-pack of AA Batteries ($18.99 value), FREE Food Court Pizza ($9.95 value) and FREE Organic Tortilla Chips ($4.99 value). This offer is valid through February 10th.