Firstly, marketing expenses are just as expensive in Western Europe as in the U.S.. In fact, many clinics advertise online; therefore, the expenses are exactly the same. Secondly, the cost of labor in Western Europe is very high. Have you ever lived in Sweden or in Norway? I highly doubt that techs in the U.S. are earning more than in Belgium, Sweden or Denmark. Thirdly, malpractice insurance is a fixed and variable expense that is held in case a contingency occurs. It's smart business and surely it is just a fraction of the total earnings from 10 dollars per graft that some FUE surgeons are charging in the U.S..
I've lived in 5 countries and I can assure you that running a business in the U.S. is not more expensive than in Europe. Quite the opposite, in fact. European countries can be very expensive, depending on the country. Finally, I will note that supply and demand will determine what U.S. surgeons can and will charge, but I surely couldn't afford to pay $80,000 for two FUE surgeries. Most people can't! Hence the large supply of FUT in the U.S..