Pizza Coupons

A local pizza firm has proposed that the bank print complimentary pizza coupons to give away to customers at no cost to the bank (other than printing) and to also furnish flyers to place on the top of the pizza boxes. The retail value of the pizza deal is $15, but the bank would not be responsible for this cost. The owner of the pizza firm would absorb the pizza costs. This does not give me a warm and fuzzy feeling, but I cannot locate any regulation that would suggest that this would not be a good idea. I don't think RESPA would apply since there would not be any R/E advertising or referrals.