“(1) the defendant is bound to make reparation for the damage directly flowing from the transaction; (2) although such damage need not to have been foreseeable, it must have been directly caused by the transaction; (3) in assessing such damage, the plaintiff is entitled to recover by way of damages the full price paid by him, but he must give credit for any benefits which he has received as a result of the transaction; (4) as a general rule, the benefits received by him include the market value of the property acquired as at the date of acquisition; but such general rule is not to be inflexibly applied where to do so would prevent him obtaining full compensation for the wrong suffered; (5) although the circumstances in which the general rule should not apply cannot be comprehensively stated, it will normally not apply where either (a) the misrepresentation has continued to operate after the date of the acquisition so as to induce the plaintiff to retain the asset or (b) the circumstances of the case are such that the plaintiff is, by reason of the fraud, locked into the property. (6) In addition, the plaintiff is entitled to recover consequential losses caused by the transaction; (7) the plaintiff must take all reasonable steps to mitigate his loss once he has discovered the fraud.”
“167. The question whether an alleged benefit should or should not be taken into account cannot be determined by mere application of the “but for” test. Where the wrongful conduct consists of causing the victim to enter into a venture or transaction which he would not otherwise have entered into, and the wrongdoer alleges that the victim has received a subsequent benefit which he would not have received but for entering into the venture or transaction, it seems to me that the question to be asked is whether the receipt of the benefit was not merely a result of the venture or transaction, in a historical sense, but was part of the complex of obligations and benefits intrinsic, i.e. belonging naturally, to the venture or transaction.”