Personally, I would not pay a coach. I am not familiar with the training on PS, but there is so much good free information available in many places, that I can't see paying someone. But your decision might be different based on your goals, motivations, and playing level. I am a recreational player and have a net win ratio. If your goal is to play professionally to make a living and you do not have net win ratio, it might be worth paying a coach to get you up to speed quickly.