In the end, no one can really state exactly how much Medicare for All will cost or save money.

That all depends on how it is implemented. For example, are pharmaceuticals covered? Will the govt be allowed to negotiate prices? How much will be the health care providers be compensated? Will it be adjusted to population densities? You cannot pay a doctor in Idaho what you pay a doctor in NYC. etc.

But the larger problem with the entire cost debate is that it loses sight at the heart of the issue. The moral obligation as a society that we all have to care for our health needs. No one questions costs when it comes to war. That's why we've fought at least 6 wars since the end of WWII. We fought them because of a "moral imperative" to protect us.

If we allow Medicare for All to get bogged down into accounting debates, we will start to lose the argument. Win the moral argument and debate the costs at another time.