(1) The dutiable value of dutiable property that is subject to a dutiable transaction is the greater of (a) the consideration (if any) for the dutiable transaction (being the amount of a monetary consideration or the value of a non-monetary consideration, or both); and(b) the unencumbered value of the dutiable property.(2) The dutiable value of dutiable property transferred by way of foreclosure is the unencumbered value of the dutiable property and not the value of the debt secured by the mortgaged property.(3) . . . . . . . .(4) . . . . . . . .