Unless you can purchase one in OZ, forget it.
I've just had a new member call me last night in tears that she had bought a GLP on ebay from HK.
She had just received a nasty letter from Customs promising fines and a possibility of jail!!
She was unaware of the laws that were put in place recently by the federal & State ( NSW) governments.
If you purchase one locally, I would advise that you join a local astro society.
This will give you the umbrella of protection that you are using it as an aid to your hobby (allowed under the law (NSW)
Of course, if you use it unlawfully all that goes out the window.