A new generation Mercedes model will not suddenly jump up 50%, that absolutely does not happen. You will not see a new generation E320 suddenly be 50% more expensive than it's previous version. Your analogy is beyond ridiculous not to mention completely wrong and only serves to make a point against your own argument.
That's right. Besides thats the worse anology possible. You buy Mercedes and Rolex instead of Honda and Casio not because of performance but because they show off your status. They are meant to be expensive. Who cares if your graphics card hidden away in the pc is 10x more expensive than average Joe's card.