How do use a coupon?
Special offers available on Cost.com may contain a coupon code that you will need to enter in a dedicated field on the merchant website. To take advantage of our coupons, grab the code, click on the offer link, and enter the code in the coupon space (also called promotional code, source code, or promo code) at the store’s checkout. When an offer doesn’t have a coupon code, just follow the link and your savings will be automatically applied to your order!