What I do for you:
Teach you to formulate your workouts
Show you how to do each exercise correctly (there's so much more to effectual exercise than just form!).
Build lean muscle tissue via resistance training now shown in research to ward off heart attack and stroke just as effectively as cardio.
Burn off body fat in the most effective, long term way.
Learn the motivation to continue on and do it on your own if you want.
There are "Apprentices" and "Life-stylers." -If you want to come in for a few months and learn as much as you can and move ahead on your own, that's great! Or, if you're like many who use a trainer regularly and really want to make it a long term thing, that's fantastic, too. Both work and both have merit!