Where do people get the idea that the PS3 is overpriced? There is a LOT of computing power shoved into that thing (so much that only 10,000 are already beating all other computer systems in Folding@Home), plus a very expensive Blu-ray drive. Sony actually loses a few hundred dollars on each one they sell.
Now whether it was a good idea to introduce a game console at that price is another question. I bought a Wii.
Because it is. Price is not what the components are worth but what the customer is willing to pay and what they perceive as the value of the item.
So the PS3 is over priced when it is one dollar more then the perceived value to the target customer even if the component parts actually cost more then the sale price.