An owner of land who sold directly to a purchaser found by the broker at a price less than that at which it was listed is liable for the broker's commissions. Davis-Fisher Co. v. Hall, 148 N. W. 713, 182 Mich. 574, L. E. A. 1915 A, 1224; Schlegal v. Fuller, 149 P. 1118, - Okl. Sup. - .