(1) To avoid doubt, the consideration for a * taxable supply of a thing acquired by fully redeeming a * voucher is taken to be the sum of:
(a) the * stated monetary value of the voucher, reduced by any amount of that value refunded to the holder of the voucher in respect of the supply; and
(b) any additional consideration provided for the supply.
(2) To avoid doubt, the consideration for a * taxable supply of a thing acquired by partly redeeming a * voucher is taken to be the sum of:
(a) the amount of the * stated monetary value of the voucher that the redemption represents; and
(b) any additional consideration provided for the supply.
(3) Subsections (1) and (2) have effect despite section 9 - 15 (which is about consideration).