(3) Where excise tax is payable under this Act on taxable goods by reference to a specific quantity measured by volume or weight, if the goods are imported, sold in Saint Lucia or removed from a warehouse in any container intended for sale with or of a kind usually sold with the goods in a sale by retail and the container is marked, labelled or commonly sold as containing, or commonly reputed to contain a specific quantity of such goods, for the purpose of determining the excise tax payable in respect of the goods, the container is presumed to contain not less than that specific quantity unless the contrary is shown to the satisfaction of the Comptroller.