Groupon extra 20% Super Sale code Posted on September 30, 2018 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. Super Savings Sale: Extra 20% Off Restaurants, Things to Do, Beauty & Spas with promo code SUPER20. Valid on 1 unit per transaction; max 3 local deals. Up to $50 discount per deal. Ends 10/1.