one price fits all vs tiered pricing would indicate that the lower tiered coaches would be recieving inferior pay for their time unless all of the coaches were to pool their fees and be paid equally out of that.

then there is the question of how to determine a tier? what happens if that team does great and moves up? do they pay more, or less if they move down?

one price seems to fit as you'd expect same level of coaching and not expect that your higher or lower fee means you're paying to be on a good or lesser team, so to speak; but rather paying to ensure that the younger and less experienced will recieve the same level of coaching and expertise regardless of ability of the player. Thus, hopefully all levels of players will continue to grow in ablility and confidence.