Depends which prices you're quoting. At many health care facilities, the amount charged to insurers is way higher than the amount charged to individuals if they don't have coverage. It's very difficult to say whether or not care is expensive because so many of the figures are bogus.
The waiting lists aren't BS. The article you linked even says as much. General care you'll probably be fine with but many specialties do have long wait lists. My point is bigger than that though. If you nationalize it, you're stuck with the official waiting list. Right now, you can at least "shop around".
Our system really isn't that bad. There are things that could be done to improve it, things that should have been done instead of the AHA. Making it all the domain of the feds is the last thing you want to do. They couldn't even launch a website with years of preparation. They can't even keep the Veterans Administration out of the news for any length of time. They'd have to prove competency in something before a majority of Americans are going to want more federal intrusion in their lives.
My healthcare is between me and my doctor. Not the government.