INVESTMENT: $59 for 6 pairs System 75 CZ personal ear piercer. RETAIL CHARGE: $30-$40 PER EAR PIERCING SET DOLLAR RETURN: $180-$240 Package includes: 6 Pairs System 75 personal ear piercer cartridge ear piercing studs, R910 Release forms, cleaning gels. Studex Universal Ear Piercing System is the most widely used ear piercing system in the world today.