Heidi Murphy is not so sure this change will actually result in cheaper prices at the till.

<p>Heidi Murphy is not so sure this change will actually result in cheaper prices at the till.</p>

Listen to the best bits of 3AW Mornings & exclusive interviews here - and don't forget to tune in live between 8.30am and midday. [http://www.3aw.com.au/](http://www.3aw.com.au/)

<p>Listen to the best bits of 3AW Mornings &amp; exclusive interviews here - and don't forget to tune in live between 8.30am and midday. [http://www.3aw.com.au/](http://www.3aw.com.au/)</p>