I need to know FAST!

Depends on the amount of movement you need and how long the orthodontist thinks it will take to complete the work.

Average cost of braces $3000-$4000 but again depends on just how much work you need done.

Usually 5 g's for a good orthodontist, if it's minor you can MAYBE get a general dentist to do it for cheaper

It all depends on what needs to be done. You can go for a consultation with an orthodontist, maybe even 2 or 3 to get different opinions on treatment methods and costs.
It's difficult to give a fee without seeing what needs to be done.