These things MUST be sold "In-Person"! You may get a few sales with a flyer but probably not enough to cover your printing costs.

Put put the price at $15ea...walk into an office...hand one to the receptionist as you mention the restaurants involved and the VALUE. Then, when the 2nd person comes up to take a look...hand her one and say, "If you take one also, the price is only $12ea." Then when a 3rd person comes up to take a look, say, "If all 3 of you buy now, I'll let them go for $10ea."

Or, get some highschool kid or member of the group to do the selling.