Found this literally just then!
As far as I can tell it's the cheapest it's ever been, at least from what has been posted here.
Cheapest on OzBargain @ $629 + Shipping
Typical Australian Retailer @ $699 + Shipping(pccasegear.com)
Umart @ $629 + Shipping(umart.com.au)
They also have other deals too, hard to say that the 8700k is a "Deal" but it's cheaper compared to other stores nonetheless.
9600k @ $382.20(ebay.com.au)
8700k @ $583.20(ebay.com.au)
9900k @ $777.60(ebay.com.au)
So you save $15, $629 at umart no price jacking(umart.com.au)