Keep in a mind an arm lift, like any other plastic surgery procedure, should cost less if you get more than one operation at the same time. An arm lift plastic surgeon would not likely be qualified to do facial work (and vice-versa) but just keep that in mind in-case there is a similar procedure you're thinking about
Hi..I'am from India and cost of Arm Reduction Surgery here is pretty low compared to other countries I guess. So if you got to plan surgery in India you got to choose best cosmetic surgeon in india
If you are purely looking at the surgery from a price point then you will be in for a very rough ride to say the least. Remember that even plastic or cosmetic surgery IS surgery and can have massive complications if not researched correctly. You must consider the outcome you require and also have a few consultations to find a surgeon that is right for your situation. You must also qualify the surgeon and make sure they are not only board certified but also a specialist in the surgery you want to have done.
Take your time with it and do things correctly the first time.