My brother went to Thailand to have a comprehensive physical, he had several polyps removed after his colonoscopy, one very early bladder cancer removal that was seen on a CT scan that would have never been done here in the US (since he had no symptoms), a bunch of dental work and more, and he spent less than $3k. I have a $3k deductible on my health insurance, and no plan is going to pay for CT scans or MRIs as preventative screenings for me.
The medical care in the US is SHAMEFUL. The only people who do better using the health care in the US are a lucky few, the insurance industry has made most of the advances in medicine little or no use to the majority of Americans. Sure, get cancer and then they will approve a procedure, but preventative health in this country is still in the dark ages.
The dichotomy between the rich and the poor when it comes to health care here is heartbreaking. This is considered one of the richest countries in the world, and yet we have poor who die because of a lack of consistent medical care. We rank near the bottom in medical care quality for all the developed countries, and yet we hear it all the time that our system is better than everyone's. it just is not true - yes, for some, it is, but for the majority if the middle class it is not, and for the poor, they would be better living in many other countries.
Reference
World Health Organization ranking of health systems - Wikipedia, the free encyclopedia