BOGO FREE Sundrop Coupon This post may contain affiliate links. Please see the full disclosure policy here. Posted on August 11, 2011 Written by Mary Leave a Comment Head over and print a new Buy One Get One FREE Sundrop Coupon. (use zip 30187 if you don’t see it) and choose the BEVERAGE category to find it super fast! This Sundrop Coupon will save you up to $1.49 and is valid on diet or regular Sundrop.