That is true but only for the black color. For purple or orange Amazon's price is about $50 more. I got the purple on the previous drop and I really like how it stands out from the rest of the black box.
w.luYes, I think it is worth it for 2 reasons: 1st it raises the box and gives it a much better sturdy look, secondly it gives you a nice space for extra straps and various watch (or not) related odd bits and bobs.