Groupon Doorbuster Day 6 Posted on November 6, 2017 by The Goddess deranged.me posts may contain affiliate links; I will be compensated if you make a purchase after clicking that link. See disclosure policy under The Legal Stuff. Day Six of the Groupon Doorbusters is a Buy More Save More Day. Use promo code OFF to save. Valid on 1 local unit per transaction; max 3 uses per customer. Ends 11/6.