The question is:
Why are “open source” [no pre-loaded OS] Dell PCs priced $50+ more than identical hardware with Vista pre-loaded?
As it turns out to be, the profit margins on the actual Dell box is close to zero after it reaches your door. Most of the profit comes from the spyware/adware/crippleware [crapware] that Dell ships with the box.
Another great business model has been created; bringing spamming directly to the desktop, included with the hardware for your convenience.