They know that their fellow citizens instinctively resist rationing imposed from outside, so they promise “unlimited” care for all, which is about as realistic as promising personal unicorns for all. In the process, they also ignore the fact that many of the systems they admire are neither single-payer nor free to patients. Above and beyond the exorbitant taxes that must almost always be levied to fund their single-payer schemes, many of these countries impose other costs on patients. There are frequently co-payments, deductibles, and other cost-sharing requirements. In fact, in countries such as Australia, Germany, Japan, the Netherlands, and Switzerland, consumers cover a greater portion of health-care spending out-of-pocket than do Americans. But American single-payer proposals eliminate most or all such cost-sharing. 
Bernie Sanders’s proposed “Medicare for All” system, which would have cost $13.8 trillion over its first decade of operation?