Update: Commenters below note that they received email confirmation of using their Instacart $20 off $75 AMEX Offer when using this service, meaning they received an effective $70 off $150!
Use code (Exp: 4/16): EASTER22
Limit one use per account.
Costco Same Day Delivery is fulfilled by Instacart for Costco members. Prices are marked up by by about 17% over in-store pricing, but if you have an Instacart Express membership, the markup drops to about 9%. You can link your Costco Same Day and Instacart Express accounts here to get that savings.
Either way, you’ll still come out ahead if you order $150 of items with this coupon.