The government created this problem. Laws favoring non-profit hospitals were pushed through, which eliminated most for profit hospitals. To maintain the semblance of non-profitability, these hospitals use their emergency rooms to book fake losses.
They charge outrageous prices knowing full well that they'll only get a fraction of those charges. This allows them to book a loss and maintain the veneer of a non-profit hospital. Of course, most people are unaware that the hospitals get a large portion of those fake losses back each year from the government. I believe it's called uncompensated care rebates.
If you can, avoid going to an emergency room. Urgent care centers can take care of a lot of the same injuries, including lacerations, at a much lower price.
Check out this urgent care center in Hollywood. Their prices are reasonable:
Hollywood Walk-In Clinic - Services
This guy runs a surgery center that doesn't accept insurance and the rates are unbelievably low. Here's his blog:
G. Keith Smith, M.D.