Advance Pitching Clinic for age groups 15-18. Individual Lessons. There are 10 Lessons at 1 hr. each (Pay per Lesson method) or you can (Pay in Full) and get the 10 hrs. of Clinic for $575 which is about a 25% discount. This Clinic is for the Pitcher that has pitched for at least two season prior and has the basic knowledge needed to move forward in his pitching knowledge and performance.