A real estate agent who finds a purchaser on the terms fixed by the owner of the property, such purchaser being ready, willing and able to take a conveyance and pay the purchase price, has earned his commissions; the fact that the contract involved an exchange of lands, does not change the rule announced. Herscher v. Wells, 103 I11. App. 418; Moskowitz v. Hornberger, 38 N. Y. S. 114, 15 Misc. 645; Freedman v. Gordon, 4 Colo. App. 343, 35 P. 879; Davis v. Gottschalk, 141 N. Y. Sup. 517, 80 Misc. Rep. 530; Mathews v. Globe-Star Realty Co., 167 S. W. 764, - Tex. Civ. App. -; Stackell v. Hayes, 137 N. Y. Sup. 854; Stewart v. Will, 131 P. 1027, 65 Or. 138; Lanham v. Cockrell, 194 S. W. 936, aff. judg. Civ. App., 152 S. W. 189; - Tex. Sup. -; Hadde v. Milone R. E. Co., 196 S. W. 347, - Tex. Civ. App. -; Line v. Felder, 208 S.W. 409, - Tex. Civ. App. -; Morrison v. Jackson, 85 S. 573, - Ala. App. - .