“ruling price” means-

(a)     in the case of a financial instrument listed on a recognised exchange in the Republic, the last sale price of that financial instrument at close of business of the exchange, unless there is a higher bid or a lower offer on that day subsequent to the last sale in which case the price of that higher bid or lower offer will prevail; or

(b)     in the case of a financial instrument listed on a recognised exchange outside the Republic, the ruling price of that financial instrument as determined in item (a) and if the ruling price is not determined in this manner by that exchange, the last price quoted in respect of that financial instrument at close of business of that exchange.