[pfranz]

Doctors have no idea how much a procedure or test cost (and they don't care or want that burden)--that stuff is generally insulated by insurance. In my experience, they are vaguely aware of the price of different prescriptions (after insurance) because that directly affects the patient. The economic forces are all out of whack. I'm not blaming doctors--the information should be more easily available to them to provide to the patient.

I'm not in the medical industry (but my g/f was seeking out her own insurance recently), but I would guess that the ER would work similar to a car mechanic. Where the paperwork you're already signing upfront includes a flat price you're paying for diagnostics. Then after the diagnostics (or possibly at the same time you signed the diagnostic paperwork), you agree to a price range for treatment/tests. It would itemize the fixed costs and estimate the variables. If things go outside of that range, there's an amendment. You walk home with the bill.