There is a network of repair techs who are members of NAPBIRT (National Association of Band Instrument Repair Technicians). There are also several facebook groups where repair techs and people interested in repair can participate. In my personal experience there is never a shortage of used saxophones to practice on from sources such as EBay, pawnshops, and local classifieds. This post made me smile when I thought of the Conn factory deliberately throwing the poor selling and unpopular Conn-O-Saxe's off the roof of the building to use to train new repair technicians. This is one reason there are so few left today and why they cost so damn much.