6681/6630/6680

Nokia E50 is supposed to be a equipped with OS v9.1, 256K cols, 70MB internal memory, better browser, 1.3MP cam, Push email, QVGA display, Better Office apps, Bluetooth v2.0, But...cost is 10.3K. My doubt is why is it cheaper than older models like 6681/6630/6680? Any valid reason...