Einstein Bros Bagels Coupon: $3 off A Baker’s Dozen Box! August 27, 2014 by Rebekah The links in the post below may be affiliate links. Read the full disclosure.Print Email Einstein Bros Bagels just released a new printable coupon which we can use to save $3 off A Baker’s Dozen Box! These boxes come with 13 bagels and 2 tubs of Shmear. This coupon is valid through September 10th and is not valid with any other offers.