The airspace charts from Airservices are now available to download free in pdf format. The relevant maps for out flying sites are the Sydney and Newcastle VNCs and the Sydney VTC.
http://www.airservicesaustralia.com/aip/aip.asp
direct link
Note the radio areas around the non-towered aerodromes are not shown, but you can easily find the aerodromes at Bathurst, Mudgee and Orange.
Edit May 2018: updated the link, slso if the page moves I found it under: Publications>Aeronautical Information Products (AIP)>AIP Charts (24 MAY 2018). There is also a copyright agreement you need to click.
