One thing a number of people I know use in order to get the surgery is CareCredit. I have heard mixed reviews on how easy it is to qualify. Below is the link. You can search your surgeon's name to see if they take it. I believe the way it works is each surgeon has their own individualized payment plan. The plan you get with Dr. Fischer is not the same you would get with Dr. Garramone, for example. Do your research.
http://www.carecredit.com/
In case there is misinformation, the cost of top surgery in the U.S. is $4,000-$8,500 in most cases. That cost is surgeon fees, anesthesiologist fees, and surgery center fees. Interestingly, the costs have remained the same for a number of years, which is positive. As an aside, peri/keyhole procedures tend to cost a bit more than the double incision method.
To my knowledge, the only insurance company that will pay for top surgery remains Aetna. Aetna started paying for it many, many years ago and I am surprised that more insurance companies have not followed suit. Hopefully soon. However, not all surgeons take insurance, either.