Right. Eventually your business grows, you're doing $3M in revenue, and have 8 employees with a total burden of $1.5M. How much will it cost to run with per core fees for various components? Was the ease of use and maintability worth it (at this point, one can start to calculate but it gets murky)? Will it add or subtract from the infratstructure costs? I don't know, but I'm not going to go down a proprietary path to find out.

EDIT: Of course, it always depends on where you are coming from. If you are in a large corp. with MS tech already entrenched or come from that environment, it makes sense (as it seems many are that are weighing in). Or, if you are building to flip, and are most productive in this ecosystem.

The big difference is that Bizspark gives you "production" licenses. The Action Pack licences are restricted to non-production usage only.

We actually use the Action Pack today to get access to the latest VS Pro. But it's "limited to three developers", and the other MSDN software benefits are severely limited compared to MSDN pro (e.g. only certain editions of Windows Server and SQL Server).