Repeating the Microsoft mantra that “free is not really free,” the programmer showed that while the basic development environment for Eclipse is free versus a basic Visual Studio 2005 license, which costs $8,200, the cost of using Eclipse increases as users tap into load testing and other advanced features.
When he added it up, the cost of using VS 2005 was over $30,000 versus more than $100,000 for Eclipse-based applications.
(dead link – http://tinyurl.com/783cx) Source