Updated on 19 Dec 2014: I am right now on 8th tray. It all went by so fast. I have a total of 18 trays. When my orthodondist told me about invisalign it was too good to be true and I almost went with metal braces. After a little research ( realself and youtube mostly) I decided that I was worth a try, at worst my treatment would take longer. I saved $2000 before starting my treatment (I already knew which clinic I wanted). The requires down payment was $1000 then I was able to pay the rest over a period of a year (400$ a month). I asked to pay in tow years but they refuses. One thing you'll love about invisalign is how fast and easy the consultation and then appointements are 30 minutes then you're out most of the time. I'll try and post about my first consultation in another update. Obviously if you have any question just let me know. *My mother language being french I apologize for grammar mistakes and such*