And everyone thought that ediscovery costs would be lower since privilege review need not be as thorough as it used to be (you are not waiving the privilege by inadvertent disclosure provided you took reasonable steps ..).
Here the article that says, costs will not be reduced:
Rule 502 May Not Deliver Promised Cost Relief
http://www.law.com/jsp/legaltechnology/pubArticleLT.jsp?id=1202426427726&rss=ltn