holiday in Hong kong, china, Macao and KL in that order.

We fly from Perth KL ,same day take a flight to Macao and get the ferry to across to Hong kong, stay there 3 nights and then fly to China for 5 nights. 6 days, then fly back to Hong kong and get the ferry back to Macao for 2 nights, then fly to KL and stay 5 nights. What visas do I need? There are 4 of us holidaying and what is the cost of all the visas we require per person?