One of my brackets came out and I lost it, how much do you think it will cost to get it replaced?

You should call your orthodontist as soon as possible to let them know that a bracket came off. Each office has its own policies regarding the cost of a lost bracket. If it's the first time, some offices will waive the fee as a courtesy. Otherwise, the fee may be up to $50 to fix it. 

Hello and thank you for your question.In my office we do not charge to replace bracket the first time. It should say in your contract what the fee would be as every doctor has his/her own policy. It will not be much as a rule though.Good luck!