Expensive, it's expensive. I have what's considered a "Cadillac plan" with a rather unfortunate monthly premium, and also a yearly deductible. Our health care costs have exploded (although I would imagine this is occurring pretty much everywhere), and there's no end in sight. Everyone is aging, sick, fat, being diagnosed with cancer, needing new body parts, falling apart, and living a long damn time. It's a recipe for disaster, and health care costs have been responding accordingly (or something like that).
The good thing about Mayo is they operate as an "in-network" provider, assuming you live in the U.S. and have insurance (they work with many/most insurance companies). A/G, for example, practice "out-of-network" with ALL insurance companies (the hospital they use, etc. are separate and potentially "in-network" depending on your specific insurance). For me, Keller would've been a fraction of the cost of Gunson.
I also know nothing about the quad LeFort (or whatever it's called), so maybe that's different from a cost perspective.