(i) "It is only in exceptional circumstances that specific performance will be granted at the instance of a purchase who is in breach of an essential condition" per Mason and Deane, JJ in Legione supra at p.448; Ciavarella v. Balmer [1983] HCA 26; (1983) 153 CLR 438 at 454.
(ii) In considering the exercise of the jurisdiction it must not be overlooked that the contract is a commercial one, entered into at arm's length by person's who are able to look after their own interests and the jurisdiction should not be used to re-form contracts - per Deane and Dawson, JJ in Sterne's Case supra at p.526.
(iii) That to establish exceptional circumstances where the contract has been validly rescinded for breach of a term which is essential, the party seeking relief must show conduct amounting to unconscionable conduct on the part of the vendor. See Ciavarella supra and Shiloh's case.
(iv) Unconscionable conduct does not have to be exceptional because the exceptional aspect to the jurisdiction is that a court will be reluctant to interfere "with the contractual rights of parties who have chosen to make time of the essence of the contract" per Deane and Dawson, JJ in Sterne's case supra at p.526.
As their Honours said - 'The circumstances must be such as to make it plain that it is necessary to intervene to avoid injustice or, what is the same thing, to relieve against unconscionable - or more accurately, unconscientious - conduct.'
(v) "The circumstances which may make the case exceptional to warrant relief in favour of a purchaser who is in breach of an essential term ordinarily there must be something 'such as fraud, mistake, accident or surprise before relief will be granted'. These elements do not, however, exhaust the scope of unconscionable or unconscientious behaviour; they are referred to in this context to emphasise that a strong case must be made out to warrant departure from the general approach, which is to hold the parties to their bargain." - Deane and Dawson, JJ, Sterne's case supra at p.526.
(Emphasis added)