Hi there Honey! You can go to the IDP at Keppel building near Ayala, they do reviews as well, just so you will have an idea what the test is like. I did the review days before I went to take the actual test and the review cost me Php 2,000 plus if remember rightly.
You will be taking the General test so that should be okidoki. They only need 4.0 for band score.
Ohh I'm sorry, I am from Cebu - so I took it there.