Revenue from the sale of goods in the course of ordinary
activities is measured at the fair value of the consideration
received or receivable net of returns, trade discounts and
volume rebates. Revenue is recognised when persuasive
evidence exists, usually in the form of an executed sales
agreement, that the significant risks and rewards of
ownership have been transferred to the customer the
associated costs and possible return of goods can be
estimated reliably, there is no continuing management
involvement with the goods, and the amount of revenue
can be measured reliably. If it is probable that discounts
will be granted and the amount can be measured reliably,
the discount is recognised as a reduction of revenue as the
sales are recognised.