30 However, in the hearing before us it became apparent that a serious problem had been created by the decision made by the parties to split the proceedings into one of so-called liability and one of so-called quantum. The proceeding before her Honour proceeded on the basis that if liability was established under "the contract" then there would be an examination of the individual transactions which were claimed by the appellant to have taken place in consequence of it procuring its customers entry into rental agreements with CFA. However, upon the hearing of the appeal a question arose as to whether or not the facts established that there was one unilateral contract as was considered on the evidence before her Honour, or rather, and in the alternative, whether or not the facts established that there was a series of such contracts. Unfortunately her Honour was constrained by the fact that the parties had agreed to call evidence of a limited number of transactions between the appellant, its customers and CFA only. All of the other transactions, of which there were many, were treated as being relevant to the issue of quantum. However, in my view, the evidence of those transactions was most relevant to the issue of whether or not the CFA had any liability under contract.
31 To demonstrate the problem created by the splitting of the proceeding, it is sufficient to examine the course of conduct, as far as it was the subject of evidence before her Honour, of both parties over the period of time between February 1998 and February 2003 when the appellant's dealership was terminated.
32 Dealing first with the presentation made in Christchurch, the evidence before her Honour and which she accepted, was that Mr Blancato stated to those present that BISG dealers would be able to purchase machines which had been financed through CFA for $1.00 each at the end of the rental period. He said that some models, "high end black and white and colour photocopiers" would be excluded as would photocopiers sold directly by Canon. The right could be used only at the end of the rental term or when the customer no longer required the photocopier, whichever occurred second. A copier could not remain with the same customer after being purchased for $1.00 by the dealer.
33 Mr Blancato gave evidence that he did not identify which models would be excluded and he gave evidence that conditions would apply, but he did not identify comprehensively those conditions. He also told those present that the "campaign" was to start immediately. A Powerpoint display, the details of which were not discovered nor produced at trial, was used in the course of the presentation.
34 As pointed out above, CFA in its April 1998 newsletter repeated what had been said in New Zealand but excluded specifically eight models from the "rule" that dealers were "now able to purchase certain CFA rentals at the end of their term for $1.00." That was followed up by further dealer newsletters published by CFA in May 1998, February 1999, May 2000 and March 2001 whereby statements were made by CFA that dealers were able to purchase ex-rental machines for $1.00.
35 In addition, Mr Penrose, who was the state supervisor of CFA throughout the relevant period, gave evidence "that at some stage during 1999 the plan by which Canon dealers could buy ex-rental machines for $1.00 was varied to include facsimile machines and non-copier electronic equipment". Mr Janssen's evidence, about which he was not challenged, was that this occurred in September or October of 1999 and that thereafter he secured Mildura Golf Club to enter into a rental arrangement with CFA for two photocopiers and a fax machine and that in February 2003 the appellant collected the equipment and retained possession of it.
36 Furthermore the General Manager of CFA, Mr Lagos, gave evidence that in the period after February 1998, CFA was informed by Canon of which models were excluded from the $1.00 buy back scheme and that CFA had upon being so informed notified dealers of which model machines were or were not available.
37 The evidence given before her Honour as to the alleged acceptance of the offer was that on 30 April 1998 Mr Janssen prepared an invoice in relation to a photocopier which he had sold to the Mildura Kode School under a rental finance arrangement with CFA. He gave evidence, which was unchallenged, that at the conclusion of the rental term he supplied a new photocopier to the school and took possession of the old photocopier. He gave evidence, which again was uncontradicted, that during March 1998 the appellant arranged for the Department of Natural Resources and Environment to enter into a rental agreement for a photocopier with CFA, which agreement was accepted by CFA. Likewise he gave evidence that in May 2002 at the end of the rental term, the appellant supplied a new photocopier to that customer and collected the old photocopier which the appellant retained. It is clear that, on numerous occasions prior to the termination of the BISG dealership with the appellant in February 2003, CFA complied with what Mr Lagos said in the course of his evidence was "a promise" made in New Zealand to BISG dealers that they were able to purchase certain models of photocopiers at the end of the rental term for the nominal sum of $1.00 each.
38 It was only after the termination of the dealership agreement between the appellant and CFA that CFA refused to comply with the arrangement which had been complied with previously on a number of occasions since the New Zealand conference. It was subsequent to that determination that CFA refused to make machines available for purchase by the appellant at the price of $1.00. However the appellant argued that it was entitled to retain machines provided to its customers in circumstances whereby it had arranged for such customers to use the financial services provided by CFA.
39 Accordingly, it might be said that the true dispute in issue in the case before her Honour should have been, but was not, whether or not the appellant had a right to make a claim in contract for the retention of a number of machines at the end of the relevant rental terms, notwithstanding the fact that the appellant was no longer a BISG dealer. Schedule 1 attached to the statement of claim asserted that numerous rental agreements were entered into by customers of the appellant with CFA at various dates between April 1998 and November 2002. However, the case was not pleaded or conducted before her Honour on the basis that each of those agreements was the subject of a separate agreement between the appellant and CFA.
40 At all times the case was conducted on the basis that "the offer" consisted of what was said and done at the conference in Christchurch in February 1998. Upon appeal, the appellant maintained that argument. It submits that her Honour was in error in concluding that "the presentation" in New Zealand was not sufficiently certain or legally enforceable. The appellant argues that her Honour was in error in concluding that evidence of post-contractual conduct and communications between the parties was not admissible to establish the existence of an agreement. The appellant submits that the evidence of Mr Blancato as to what was said in the course of the New Zealand presentation was sufficient to amount to a legally enforceable offer, the acceptance of which would create a unilateral contract. The case was argued before her Honour, and before us, on the basis that the subsequent conduct of the appellant in referring many of its customers to CFA was an acceptance of that offer.
41 The manner in which the appellant pleaded and conducted its case created a number of difficulties in respect to an appropriate legal analysis of the facts. The first was that it contended that there was one offer, which was accepted by the appellant when it first referred a customer to CFA finance following the presentation in New Zealand. The second was that the subsequent conduct of the parties was thereafter submitted to be "post contractual conduct". Of course, if the true situation was that the appellant entered into a series of contracts, much if not all of the difficulty of evaluating the so-called post contractual conduct would evaporate because the conduct concerned would be relevant to the issue of the creation of a number of separate contracts.
42 As stated above, her Honour concluded that "the presentation" lacked the requisite certainty, and that there was no "distinct promise ... in language which is perfectly unmistakeable" as required. It is true, on the evidence accepted by her Honour, that there were uncertainties about the offer made at the presentation. Mr Blancato, whose evidence she preferred to that of Mr Janssen, said that he did not identify which models would be excluded, and although he said that conditions would apply, he did not identify those conditions comprehensively.
43 However, much was otherwise clear and certain. CFA was offering to enable dealers who arranged for their customers to use CFA finance to acquire certain model photocopiers (the specific models being yet to be identified, but excluding "high end black and white photocopiers and colour photocopiers") the opportunity to purchase the machines from CFA at the end of the finance term. The offer was to apply to new contracts entered into by such customers from 28 February 2001. The ability to purchase the photocopier was to apply at the end of the rental period. Unless the customer chose to continue renting at the end of the period, photocopiers were not to remain with the same customers at the end of the term, but were to be collected by the dealer.
44 Her Honour considered the factual circumstances in the light of Mobil Oil Australia Ltd v Lyndal Nominees Pty Ltd v Ors.[3] In that case certain statements were made on behalf of Mobil to its high performing franchisees at a convention. Those statements were to the effect that if particular sales performance levels were reached, then the franchise would obtain benefits in relation to the extended tenure of service stations owned by Mobil and leased by the franchisees. Subsequently Mobil failed to extend the tenure of franchisees who had achieved the stipulated standards of performance. The franchisees brought proceedings against Mobil claiming, amongst other things, that the speech at the convention contained an offer which was accepted by them through their reaching the required sales level performance levels, thus creating a legally enforceable contract. The Full Court of the Federal Court concluded that the address at the convention could not be construed as a legally enforceable offer of a promise. It also concluded that the terms of various post-convention communications were not sufficiently certain to give rise to a contract. As submitted by the appellant, the present case can be distinguished from Mobil. In the Mobil case it was stated explicitly that the offer was "developmental" and that there was a "lot more work to be done". The court concluded in that case that the framework in which the statements were made was "tentative in nature".[4]
45 In my view, the offer made by CFA in the present case was far less tentative and complex in nature than that in Mobil. It was a simple proposal that was said by Mr Blancato to "start immediately". Such uncertainty as there was related to the machines which were to be excluded and the precise conditions of the operation of the scheme. However, in addition to her Honour's finding that it was obvious "from the lack of detail and comprehensive information in the five minute comedy skit, ... that various questions and contingencies would have to be addressed" she concluded further that there was no evidence before her that the statement made by Mr Blancato was offered by CFA as "consideration for the doing of an act" in order to establish a unilateral contract. Her Honour stated that the evidence of Mr Blancato that the $1.00 offer would apply only to photocopiers sold through Canon BISG dealers, and not by Canon directly was quite different from saying that the dealer "must procure customers to enter rental agreements with CFA as quid pro quo for the entitlement to purchase ex-rental machines for $1.00". Accordingly, she found that there was no distinct promise.
46 If one looks at the presentation in New Zealand in isolation it appears to me that her Honour was correct in saying that there was insufficient certainty in the offer by reason of both the lack of identification of the machines to which it would apply, and of the conditions under which the scheme would operate. However, I am less convinced that the words used by Mr Blancato cannot be regarded as a promise offered as consideration for the doing of an act. It appears to me to be clear that the effect of his presentation was that in consideration of the BISG dealers arranging for their customers to use the financial services of CFA, the dealers would be entitled, subject to certain conditions, to retain the machines the subject of such finance arrangements at the conclusion of the lease.
47 The question of whether the subsequent conduct of the parties could throw light on whether or not an agreement was in fact made was considered by her Honour. First, she concluded that such conduct was not admissible in order to prove the existence of a contract. In this regard she relied upon FAI Traders Insurance Company Ltd v Savoy Plaza Ltd.[5] In any event, she held that the subsequent conduct did not " ... supply the precision, level of detail and certainty requisite for a contract". She held that the conduct was "more consistent with a programme of incentives to dealers, which lacked fixed comprehensive rules of operation". For instance, she observed that the machines which were excluded from the scheme varied from time to time and that the eligible classes of machine expanded over time. Furthermore, she concluded that the evidence given by a CFA executive, Mr Lagos, that he regarded the speech made in New Zealand as "a promise" or "guarantee" was of no weight, even if it was admissible.
48 The appellant submits that her Honour was in error in concluding that post -contractual conduct and communications are not admissible to establish the existence of a contract. In Brambles Holdings Limited v Bathurst City Council[6] Heydon JA (as he then was) gave consideration to this question. He said that the relevant principles are that post contractual conduct is admissible on the question of whether a contract is formed, but not admissible on what a contract means.[7] It is clear in my mind that when her Honour said that such evidence cannot be used to prove the existence of a contract she was not referring to the formation of the contract. In any event, and on the basis that the case advanced before her was that there was one contract, she observed that the post-contractual conduct was lacking in the precision, detail or certainty required for any determination as to its meaning. In my view her Honour's conclusion in this regard accords with established authority.
49 The appellant submits further however, that her Honour was in error in "doubting the admissibility" of evidence given by Mr Lagos on behalf of CFA, that he made a "promise" and a "guarantee" that dealers could buy back machines for $1.00. Her Honour's finding was that this evidence was of no weight in the "construction of the legal nature of the parties' dealings". In this regard she was clearly correct. As Heydon JA said in Brambles Holdings:[8]