What should I expect surgery for removal of malar mounds to cost?

I'm 66 and have had upper and lower lid surgery approximately three years ago. These mounds (festoons?) begin at the top of what I will call my eye socket, and are getting worse as I age. I'm located in Portland, Oregon, but can travel for the process. I've looked at the videos online of the necessary surgery, and read what is available. I'd far rather have surgery and possible scarring that balloons under my eyes! What can you tell me? Thank you very much. Bonnie