I had an ER visit in 2010. I got the barest minimum of care, a tetanus shot, a shot of morphine, was there a bit over an hour (had to wait for DH to drive 45 miles to come and get me)and the charge was $1000. Medicare paid $20-something, my supplement picked up a bit over $200 and I never saw a bill, so I suppose they ate the overage. $350 for the ER is a good price, today.
Rural area, good hospital, lots of MDs, low unemployment.
my sister just went to a clinic for a tetanus shot, probably be $50 just to walk in and another $80 for the shot.