here is the basis for why macs are so expensive.everything on macs is hardware specific.only certain components will work with a mac.the advantage to having a pc is the ability to upgrade to better stuff for cheaper,but you will run the risks of problems that can be easily avoided by having a mac,i.e. security issues and performance.i see macs as being for those who have a better understanding of computers than the average person and have the ability to utilize them toi their potential because they have alot to offer.if it's for school and you're not doing stuff like graphics,web design,photography,video,or even audio,then you need to go for a pc because it would be cheaper for you and would give you a good way to learn the computer better before you get in over your head.i own a g5 and 2 macbook pros as well as other microsoft machines that my wife uses and eventually my daughter.pc are good......but macs are so much better imo.