Judgment for Weichert Co. Realtors. A contract arises from offer and acceptance, and must be sufficiently definite "that the performance to be rendered by each party can be ascertained with reasonable certainty." Applying that principle, courts have allowed quasi-contractual recovery for services when a party confers a benefit with a reasonable expectation of payment. That type of quasi-contractual recovery is known as quantum meruit ("as much as he deserves"), and entitles the performing party to recoup the reasonable value of services. Accordingly, a broker seeking recovery on a theory of quantum meruit must establish that the services were performed with an expectation that the beneficiary would pay for them, and under circumstances that should have put the beneficiary on notice that the plaintiff expected to be paid. Courts have allowed brokers to recover in quantum meruit when a principal accepts a broker's services but the contract proves unenforceable for lack of agreement on essential terms–for instance, the amount of the broker's commission. Application of the foregoing principles to the transaction between Weichert and Ryan demonstrates that the record is insufficient to support a finding that Tackaberry and Ryan mutual