Correct me if I'm wrong, but the Pro version of Unity, if you include all the platforms Shiva is available for, is $3k, and Shiva Unlimited is ~$225. Are you really saying that you think Unity is like 10-15 times better? A bit better, maybe, but I don't think that much. And like Taumel says, some of the restrictions in the Indie version of Unity are big ones. You can't really make do with the Indie version.