As a pc user I will say that pc users are probably more techno savvy than Mac users. What I mean is us pc users are more likely to tinker and enjoy tinkering with his/her system. We enjoy getting the most out of it and occasionally tweaking and finding free software to enhance our experience. I'm not sure, but I guess it's possibly that many Mac users want to get their pc, get to work and not worry about anything at all.
That said, I've been pricing out new parts at the Egg and for a Phenom II X4 3.0Ghz cpu, four Gb memory, HD4870, 750Gb hdd, case, PSU, DVD, etc etc it'll run less than $1000 even if I buy an OS. This assumes I reuse my monitor. So I guess the questions is, if I buy a Dell with those specs what'll it cost? If I buy a Mac, what'll it cost? Both will be well over $1k.
Well I just looked. The Mac Pro (quad core) has lower specs and runs $2,500. A similarly equipped Dell runs $1,800. Both come with no monitor.
The pc is ~$700 less, but my custom build saves an extra $800. I can essentially build a pc for $1,500 less than a Mac Pro. Maybe the extra $1,500 can be put toward two mortgage payments. Sounds well enough.