Ok, explain why you think they are not overpriced?
It's simple. Go configure yourself a PC built on Santa Rosa chipsets (iMacs, prevgen notebooks), NVidia 9400m (current notebooks), or with the Xeon 5400 series cpus (Mac Pro). You'll find out quickly that their costs are pretty close to those Macs.
You can get PCs for less, but those use cheaper components. That's not always bad, but they are different technologies. Macs are expensive, but they are not overpriced (there is a difference).