We are in the same situation. Almost went back 2 years ago - I had a job lined up and my children were 15 and 18. However while we were over there we spoke to the uni where my eldest wanted to go and we did indeed need to pay international fees, also both me and my partner was/are earning more here and we just thought we would be going backwards - we are better off financially here but not socially. There is only the 4 of us here - all family are in the UK. Our plan for the moment is to build up our savings, pay off the mortgage and possibly go over in 5 years when my partner will be 59. Both children are bored with Perth and say that they will come with us but of course there are no guarantees. We are thinking of retiring in europe where we may be able to draw Australian pension when the time comes.