Livescan vendors can essentially charge what they want for the "rolling fee"- some vendors are listed by DOJ here:
http://ag.ca.gov/fingerprints/publications/contact.php
In addition, there are other fees that are mandated by DOJ and FBI depending on what you want the livescan for.
Last year when I had my PC832 livescan done it was $121 (fortunately paid for by my agency).