Petroleum Products Pricing Act 1983

If a supplier makes a supply of any kind of motor fuel from a declared terminal to a purchaser who —

is not the subject of any agreement or arrangement affecting price; and

takes delivery of the motor fuel at the terminal from which it is supplied,

the relevant price; and

the maximum price fixed by the order.

If the price for a relevant supply of a kind of motor fuel from a declared terminal is not the subject of an order under section 12 but the price for a relevant supply of that kind of motor fuel from another declared terminal is the subject of an order under section 12, the supplier is required to show in the invoice for a relevant supply of any motor fuel of that kind —

the relevant price;

the maximum price fixed by the order; and

if the relevant price exceeds the maximum price fixed by the order for the other terminal, any details as to the difference between those prices that the regulations require to be shown.

If the maximum price is fixed under section 12 for 2 or more other terminals, the supplier may choose between them for the purpose of complying with subsection (2) unless the Commissioner directs the supplier in writing as to which of them to use.

If a relevant price for any motor fuel is such that subsection (2)(c) would require the supplier to give details of the relevant price in the invoice for the supply of any of the motor fuel, the supplier is required to give the Commissioner, in accordance with the regulations, the same details.