About a year ago, I read that the average cost of defense on a good self-defense shoot was $24,000. Of course that number was probably put out by the insurance company selling the coverage. Regardless, even in the case of legal self defense there can be civil suits by family or the perp and win or lose, we all know lawyers don't suffer as long as they get there payday. I would imagine this is variable according to local and state laws and whether it is in a castle doctrine state.