Have you heard of the the Baby and Kids Markets? They are run in NSW, WA, VIC, SA QLD, ACT & TAS if you google them you will be able to get more specifics from their website. It is a market dedicated to preloved baby and kids items and it is awesome. I went to the WA one on Sunday, and got a stroller for $50, some baby grows for $2 each etc- they are really worth checking out.