How much can a debt collector charge on a traffic fine?

I got a traffic fine a few months back for knowingly driving uninsured. The original fine was 400 dollars. I was put on monthly payments of 40 dollars a month, made my first payment, but missed my second's month payment so I was ordered to pay the fine in full (now 360 dollars). When the time came to pay the full fine, I didn't have the money so my license got suspended. I was then sent a bill for 471 dollars for the full amount of the fine, plus license reinstatement fees. This was about a month ago. When I finally had the money to pay it all off today, the court informs me my total is 664 dollars because the fine went to collections. I don't understand how the collection fees can add up to that much. Does anyone know what I can possibly to do reduce the fine, or what my rights are? I don't feel like I should have to pay that much but I don't have any idea where to start if I want to fight this.