As soon as you said "Moorcroft", this place came to mind http://drakesbrookantique.com.au/
It's in Waroona, but worth the trip, amazing little shop, more like a museum actually, he has so much stuff crammed in there. His wife travels abroad searching for antiques (porcelain as well as old toys and other collectables), and I vaguely recall they opened up a second outlet in Perth a few years ago. Very friendly and knowledgeable chap anyway. No idea about buying/selling through him though, I just visited the shop once passing through Waroona, thought it was an odd place to find such a little gem!
