A Christian friend of mine who is divorced with children surprised me by telling me that she favored single payer health-care. I asked her if she realized that people would have to be taxed to pay for all this free health care, and she seemed to be aware of it. But even I didn’t realize how much it would really cost.Investor’s Business Daily reports on a couple of recent studies – one from the left, and one from the far-left – that both agreed on the price tag for universal health care.Excerpt:Last year, 16 Senators, including three presidential hopefuls, co-sponsored Sanders’ “Medicare for all” bill. And earlier this month, more than 70 Democrats signed on to form a “Medicare for all” caucus. Support for the bill is now something of a litmus test for Democratic hopefuls.Do they have any idea what they’re endorsing?A new study out Monday from George Mason University’s Mercatus Center finds that Sanders plan would add to federal spending in its first 10 years, with costs steadily rising from there. That closely matches other studies — including one by the liberal Urban Institute — that looked at Sanders’ plan.To put this in perspective, “Medicare for all” would the size of the already bloated federal government. Doubling corporate and individual income taxes wouldn’t cover the costs.