Cost of parts is not the same as value, I said much the same in another thread with a reference to jewellery...
Something along the lines of 'A silver ring may only have £25 worth of silver, but that doesn't stop it being worth £10,000
Like it or not, it is clear the Wii is more valuable to people than the PS3 or 360 (both together in fact).
The only other way of answering the question is with personal value, ie which is more valuable to a specific user.
Of course that then makes this thread a basic "Which do you prefer"








