This seems about right. Benedict Evans astutely argues:
Apple stores are huge rich-media billboards on every major shopping street in the developed world: I can’t think of any other company that has shops as big as that in such premium locations in as many places. Apple retail is a self-funding marketing operation. So too, perhaps, is the gold watch. Apple might only sell a few tens of thousands, but what impression does it create around the $1,000 watch, or the $350 watch? After all, the luxury goods market is full of companies whose most visible products are extremely expensive, but whose revenue really comes from makeup, perfume and accessories. You sell the $50k (or more) couture dress (which may be worn once), but you also sell a lot of lipsticks with the brand halo (and if you think Apple’s margins are high, have a look at the gross margins on perfume).
Meanwhile, though other companies are already making metal smart watches, I struggle to imagine Samsung making solid gold watches. Apple’s brand might or might not work there, but no other CE company’s does. That is, if this is marketing, and if it works, it’s marketing that no-one else can do.