Prices don't necessarily drop. Often they "sag" a bit, then stay flat for several years. Then they start moving again, often suddenly and by a lot: it can get crazy. This is the property cycle that many people talk about.
Western Sydney has been in the "crazy" stage for a while, to the point that people are thinking it'll end soon. Then, if history repeats, prices will sag a little bit then remain flat for a few years, possibly several. If you were hoping to buy, hold a few years and sell for a tidy profit; it might be too late, you're at the top of the cycle.
I wish i had this much deposit few years back
What if i hold the property for long and not decide to sell it when the price is low/stable ?