it's not unusual for the bills for the uninsured to be 3x-5x the amount that insurance companies pay.
it's also not at all unusual for the medical providers to accept 20-30% of their billed 'fee' from such individuals (basicly getting the same amount of money either way)
this means that the 'normal fees' are really just a fiction and are only paid by people who don't have the time or expertise to negotiate.