546. Broker not entitled to commissions until he has performed his undertaking.

546a. In some States reasonable compensation may be recovered for partial performance of an entire contract.

547. Broker not entitled to commissions for procuring contract subject to approval, which is withheld.

547a. Broker entitled to commission on alternative contract, which did not bind the buyer even although he approved the title.

548. Broker obtaining purchaser for vested remainder on different terms barred commissions.

549. Broker does not earn commissions if contract to be void if first payment fails.

549a. Broker acquiring interest in purchase and contract beyond authority, the same is void.

550. Variance as to name of ranch sold did not deprive broker of right to recover commissions. 486

551. Broker not entitled to commissions for contract too vague for enforcement, on failure of customer to take.

552. Withdrawal of land from sale entitled broker, under contract, to commissions.

553. Withdrawal and sale by owner in good faith to customer bars broker's commissions.

554. Principal paying commissions to broker before purchaser withdrawing cannot recover same. 554a. Owner allowed recovery of withheld money from brokers barred recovery of commissions paid.

555. Broker entitled to commissions where sale failed because rights of two heirs were not acquired.

556. Where purchaser is in default, broker not entitled to commissions.

557. When commissions are earned by broker.

558. When commissions are not earned by broker.