Critics of the legislation have said that the cost of enacting the law will tally between $700 million and 1.6 billion, a cost that will be passed along to car shoppers. With NHTSA reportedly employing a statistical cost of $6.1 million as the financial worth of a human life, this legislation is expected to cost between $11.8 million and $19.7 million per life saved.
http://m.autoblog.com/2014/03/31/nhtsa-issues-backup-camera-rules/