That's great news about the treatment, Kayin. I hope it goes well.
As for health costs, I'm a bit of an oddity...and I feel kinda bad saying this right after Kayin's post, but...well, I don't really get sick...ever. Well, ok, I get one 48-hour flu about once a year. That's it. I've only ever been in an ER because of me once, and that was for a broken arm. Yet, despite all that, I've only ever been without insurance for about 5 months in 2008..during which (surprise) nothing happened. The only health-care related expenses I've had in the last 10 years aside from normal over-the-counter stuff is my yearly eye exam/contacts refill and having my wisdom teeth taken out in 2007.
So..I guess you could say I'm one of the reasons insurance companies actually work.
I did have a friend at work a while ago though, who was in the hospital for chemo..he said the chemicals they were pumping in cost something like $10k/day. Fortunately, it was covered by insurance...though that ended up being irrelevant...