Disclaimer: I'm not trying to start a flame war. I'm just genuinely confused as to why Mac Pros cost so much. Mac Pro: Quad core 2.66ghz 3gb RAM 640gb HDD GeForce GT 120 Cost: $2899 CDN Dell XPS 435: Quad core 2.66ghz 12gb RAM 1tb HDD Radeon HD 4850 Cost: $1699 CDN I honestly don't get it. What am I missing? Surely there's more to the price difference than a nicer case and the ability to (legally) run OSX...?