Business Inteligence costs
How costs are lowered with Microsoft Business Inteligence?
There are several links to white papers and case studies on the Microsoft Business Intelligence web site: http://www.microsoft.com/bi/
You may also be interested in this Gartner report:
Magic Quadrant for Business Intelligence Platforms, 2008
Case Study: Community Health Network Saves Time and Improves Performance of IT Services Using Microsoft Business Intelligence Solution