How much is the self-locking bracket correction? Is the square one better or the spherical one?

Traditional orthodontic brackets need to be fixed with thin steel wire or rubber band and corrective steel wire. Self-locking bracket and self-locking device are more expensive. Among self-ligating brackets, spherical self-ligating brackets are thousands more expensive than square self-ligating brackets, because spherical self-ligating brackets have the advantages of no grinding, no easy bracket dropping and convenient cleaning. In addition, it is also related to the technical level of the doctor you choose and your own dental situation. The general price is 20,000-30,000.