In an action for services rendered by real estate brokers in procuring a purchaser for defendant's land, where there were no written pleadings in the trial court and no testimony of any definite contract, evidence of the value of the service based on the price for which the land sold was properly admitted and a judgment entered upon that basis was proper. Brand v. Mer-ritt, 15 Colo. 286, 25 P. 175; Geiger v. Kiser (Colo. Sup. '10), 107 P. 267; Glover v. Henderson, 120 Mo. 367, 25 S. W. 175; Bickart v. Hoffman, 19 N. Y. S. 472; Carruthers v. Towne, 86 Iowa, 318, 53 N. W. 240; Knight v. Knight, 142 I11. App. 62; Weil v. Schwartz (Tex. Civ. App. '09), 120 S. W. 1039; Fleming v. Wells (Colo. Sup. '09), 101 P. 66; W. B. McGerry & Co. v. Marsicano, 137 P. 40, 23 Cal. App. 55; Baker v. Barker, 137 N. W. 7, 118 Minn. 419; Stevens v. Wis. Farm Loan Co., 145 N. W. 173, 124 Minn. 421; Toland v. Williams & Wiley, 129 S. W. 392, - Tex. Civ. App. -; Bond v. Hancock, 163 S. W. 660, - Tex. Civ. App. -; McEwan v. Vollentine, 170 P. 490, - Okl. Sup. -; Regelin v. Lothgren, 207 I11. App. 409; Kappes v. Bacon, 209 I11. App. 290; Stockberger v. Zane, 125 N. E. 65, - Ind. App. - .