For "Perks" you need to add the option of a set price for specific items that ar not % off, dollars off or free.
One of our venues we use is offering a set price for domestic draft beers of 50 cents on Wednesdays. Since the draft beers are diferent prices normaly I can't use the current options of percent off, dollars off or free. You ned to add a field for offer description.
Tom Cappy commented
I suggested the same notion. I have a venue that wants to offer us Happy hour pricing anytime of the day (on the 1st drink). Can't put it in there. Now looks like $0 off, but 1st drink at Happy hour pricing. How would you feel as a venue when your message isn't as direct as you'd like it to be?