"The assessment of damages is ultimately a factual exercise, designed to compensate but not over-compensate the plaintiff for a civil wrong he has suffered. While this is not an area free of legal rules, it is an area in which legal rules may have to bow to the peculiar facts of the case."
“In the simple case of the purchase of property at a price in excess of its market value as a result of wrong advice, the measure of damage must be the difference between 1) the market value of the property at the date of purchase, and 2) the price actually paid.”