Here is a link to ACE Fitness packages for personal trainers and their test prep bundles.
Also, I remember ACE used to have an interactive forum/board for test prep on their website (this was years ago when I was studying for the exam). It was very helpful to view questions and ask questions about the test. I will see if I can find the link for you.
I hope this helps. You may also find some useful hints on their FB page.