Hi there
There are centres that are less than $200 per week for full time care for one child.  Newmarket Childcare is an example of this - but there is a long waiting list.  
I put my first into full time daycare from a baby and will be doing the same with the second as I have to go back to work.  Best thing to do is get your name on the waiting list as soon as possible as any good centre has 12-18 months waiting list.  My unborn #2 is already on a waiting list.
Some centres offer discounts for additional children - but beware some only offer discounts for 3+ children.
I've heard great things about Porse and they are quite cheap too and very flexible. 
 
 
Hope this helps.
Edited by VannesaD