Yep, it's a big pond, although although Josh Pike may just have the answer.
http://www.acousticcentre.com.au/ will give you an idea of local prices. Real quitars just get more expensive as they get older. If one is in the market for a serious guitar in the $3-5000 range, it's almost cheaper to fly to Vancouver or the US West Coast, buy one and fly home. Even the plastic Martins sell for over a grand here.
Cheers, Dicky Knee