Costco has published its May 2020 Coupon Book on its website. You can check it out here: Costco May 2020 Coupon Book I was actually waiting to receive the coupon book when it finally occured to me today that the coupon book is currently digital only. No printed version is available. We took screenshots of … Continue reading Costco May 2020 Coupon Book 05/20/20 to 06/14/20