Costco wants to thank our community heroes for all they do by offering an exclusive membership deal. Teachers, first responders, healthcare workers, and members of the military who join Costco as new members are eligible to receive a $20 shop card. This exclusive offer is only available online. Please note this offer is only for new memberships, not renewals. (A new member is someone who has not been a Costco member for at least 18 months.) Offer valid only in US and Puerto Rico locations. To qualify for promotional incentives, you must agree to auto-renewal of your Costco membership on a Visa card at the time of sign-up. If you elect not to sign up for auto-renewal, incentives will not be mailed.