OK bear with me!  

When I was an undergrad at MIZZOU there was a wonderful college pizza joint.  Look up college pizza joint in the dictionary and this place would be the example.  Anyway, they had an advertisement describing the following situation

A psychology graduate student needed 50 students to come in for 1 hour, do a simple test, and they'd receive $15 for their time.  The graduate student couldn't get their sample size, for weeks!  No one would come in.  So the graduate student went to the pizza joint, got 50 vouchers for 2 slices and a soda (worth $8), and in less than a day had all the participants they needed.

Humans don't always equate the actual dollar amount to what they're getting.  Think about the last time you got 10 minutes free on a parking meter?  It was great!  Think about the last time you found a quarter.  Meh.

I'm flipping houses in the 85-100k range.  I don't have room to offer a huge bonus to any agent that brings in a buyer.  I can offer a ~$200 cooler.  My question is, does anyone think this would be an appealing/attractive offer to agents to bring buyers by?  Easy enough to have my agent list this offer in the agent only comments.