Except, of course, you shouldn't be able to buy over state lines. That's for your protection for some reason.
And once everyone has free market insurance then everything will be fine. You'll be able to choose the plan that can help you cover your bills.
Your bills will still be generated by a labyrinthian and byzantine system that no one including the people in charge of running it actually understand driven heavily by profits, phases of the moon, insanity, and corn prices.
But you'll have free market insurance (sort of)! So everything will be fine!
Realistically, I get the feeling that we've found new ways repeatedly to direct our system down blind allies to the point where I wonder if we can ever find our way back out without a massive disaster/collapse.
Though I wouldn't expect Republicans to ever admit that, at least congressional ones. If the regulation existed under Reagan its the best thing ever (see: if establishment corporations abuse it) and if wasn't its communism (see: donor corporations don't want to be regulated).