Not kidding As you can see, gold price inevitably goes up. If you are worried about it being obsolete, and be "worthless", then buy the gold version! Unlike the aluminium or stainless steel versions, the gold version is at least worth the price of the case 18K gold alloy. So if you decide to sell the watch some years from now, you will get the price you paid for the gold case + appreciation. Gold price always goes up through history. And that will be (sooner or later) higher than the price you paid for your watch.