There are a lot of factors in fitting, but it also depends on your swing and your ability. They can't spend all day with you trying to see the one or two perfect strokes you put on the ball. Mostly they check your impact on a black board that will show how the club is contacting the ground. It will show if you are coming inside or outside, open or closed face, too steep or too shallow, etc. That is a big reason I don;t think you should get fitted until you are a semi-decent player. You don't need to be a single handicap but you should be able to make consistent, good contact and have a fairly repeatable swing. I would say if you are under a 20 handicap, it is worth it. Again, this is about the same point that I would say it is worth spending the money on a premium set of clubs.