It was every time I did it. Plus many of the individual tools are free and mature. No licensing fees. There's also the benefit of not having BSA looking into your firm.

The best benefits, though, are in flexibility and security rather than cost. I just have so much more available over long term to me with open formats, protocols, API's, and code. Plus, Microsoft has been saying "screw you" to its own customers in product development over past few years leveraging its lockin to keep them. Whereas, open stuff gives opportunity of switching vendors.