In order to recover commissions, the broker must: (1) show that he was employed; (2) be the procuring cause of the sale; (3) bring about the deal on the terms of his employer; (4) act in good faith; (5) produce an available purchaser, which under the general rule is ready and willing to purchase and also legally able to do so; (6) bring about a completed transaction.17 We have already seen that double employment or secret sharing in profits violates the requirements that the broker act in good faith. The purchaser brought by the broker must meet all of the terms as stated by the seller, unless the seller is willing to modify them. The broker must complete his work. He cannot abandon the negotiations and expect that, if the parties, later and in good faith, get together and make a deal, he will be able to recover commission. The employer must give the broker a fair chance to complete the transaction once he commences it, but having done so he may refuse to further negotiate through him and may take up the matter direct or through another broker. Mere introduction of the parties by the broker, or commencement of negotiations do not limit the owner to dealing with the purchaser through this broker forever.

15Colonial Trust Co. vs. Pacific Co., 158 Fed. 280; Kalfstein vs. Jackson, 132 App. Div. 1 N. Y.

16Doran vs. Bussard 18 App. Div. 387 (N. Y.).

17 Gross on Real Estate Brokers, page 103.