Cellarit Pty Ltd v Cawarrah Holdings Pty Ltd

The dispute in *Cellarit Pty Ltd v Cawarrah Holdings Pty Ltd* concerned the construction of a contract for the storage and sale of wine, specifically whether the appellant, Cellarit Pty Ltd, was entitled to vary the commission rate payable by the respondent, Cawarrah Holdings Pty Ltd, at its discretion. The matter came before the Court of Appeal of New South Wales, with McColl AP, Macfarlan and Leeming JJA presiding.

The primary legal issues before the Court were: (1) whether the contract stipulated a fixed commission rate of 15% for the duration of the agreement, or if Cellarit could unilaterally vary this rate; (2) whether the conduct of Cawarrah Holdings in paying increased commission rates constituted acceptance of a variation to the contract; and (3) whether there was sufficient consideration for any such variation. The Court also considered evidentiary issues, including the application of the rule in *Browne v Dunn* and the admissibility of opinion evidence in the form of tables summarising invoices, as well as procedural matters concerning the form and necessity of a notice of cross-appeal under the Uniform Civil Procedure Rules 2005 (NSW).

The Court analysed the contract's terms to determine the intended commission structure, considering whether the language used indicated a fixed rate or a discretionary one. It examined the conduct of the parties, particularly Cawarrah Holdings' payment of increased commission rates, to ascertain whether this conduct demonstrated mutual assent to a variation of the original agreement. The Court also assessed whether any purported variation was supported by fresh consideration, such as the foregone benefits or incurred liabilities. Furthermore, the Court addressed the evidentiary points, clarifying the circumstances under which the rule in *Browne v Dunn* applies and the admissibility of expert or opinion evidence, referencing section 79 of the *Evidence Act 1995* (NSW). Procedural arguments regarding the cross-appeal were also determined in light of the relevant Uniform Civil Procedure Rules.

The Court of Appeal made orders in relation to the appeal and cross-appeal, the specifics of which are detailed at [298] of the judgment.