A broker employed, not to purchase property but simply to procure an option, and whose employer does not avail himself of the services to make a purchase, is entitled only to reasonable compensation, and not to the same compensation to which he would have been entitled had he been employed to purchase the property. Boardman v. Hanks, 185 Mass. 555, 70 N. E. 1012; Worthington v. McGerry, 42 S. 988, 149 Ala. 251; Bailey v. Padgett, 70 S. 637, 195 Ala. 203; Witt v. Baker, 79 S. E. 243, 13 Ga. App. 396.