In the case of a base Mac Pro, finding a PC equivalent (same HW specs) that was the less expensive or even the same, was impossible. The PC was always more. Way more in fact, ~$1300USD.For those who buy a Mac then run ONLY windows, I will politely say that you are f*cking retards, and leave it at that.
I even checked recently, and might be able to build an equivalent machine for the same money, but definitely not when it released.
So if someone is interested in the bottom line, the Mac Pro would actually make sense. Seems to defy logic, but hey...$1300 saved is better than in someone else's coffers.