Actually there is a fee you pay when you register your sleds that pays into SAR. When you go to ride in another state you pay a fee there as well.
I don't think bankrupting people over needing rescue is wise.
I know I personally would struggle to call for help to begin with, not wanting to inconvenience anyone. If I knew I'd have to pay I simply wouldn't call. Just like I don't go to the doctor when I don't have good health insurance. This has been the concern of SAR groups as well.
The cost of search and rescue
Ciocarlan's stance against billing for SAR services echoes the official position of the National Association of Search and Rescue (NASAR) and the Mountain Rescue Association. The idea that people in trouble may not call for help for fear of a bill is the main reason for NASAR opposition, according to Howard Paul, who is on the Board of Directors for NASAR as well as Public Affairs manager for Colorado SAR. "Where do you draw the line on a reasonable action or negligence?" said Paul. "What is reasonable to me may not be reasonable to my neighbor."