An agreement to pay plaintiff, a real estate broker, $500 in case a sale was made to one of his customers, in consideration of plaintiff's bringing such customer to inspect defendant's farm, without plaintiff being required to solicit or endeavor to induce the customer to buy, it being plaintiff's intention to show the customers other farms in the neighborhood listed with him for sale, was not harsh or unreasonable. Lee v. Conrad (Iowa Sup. '08), 117 N. W. 1096.