It has to be said that public dental clinics charge less - around $3,000-5000 for metal braces. As for private clinics, they may charge anywhere between $2500 and $8000. Cosmetic braces like invisible aligners are even more exorbitant except Zenyum, which runs around $2,500. Invisalign, on the other hand, seems to be the most expensive form of braces of this kind with average prices climbing up to $2800 - $8000 per orthodontic treatment. Teeth-straightening surgery doesn’t come cheap either, with thousands of patients paying around $5,000-$10000.