jmpTT
859
90% sure the empty box will outperform yellow gold watch
It makes perfect sense to buy the box if you already have the watch and you're looking to sell. Quick look at Chrono24 suggests a premium of about 20,000 USD for the box. Having the box will also increase the number of offers made on the watch, so it reduces your risk as a seller, even if the box is cost neutral.
In a supercharged market, it's possible the bottom could fall out quickly. Having five ready suitors instead of two is a good thing. I'm taking a hard pass on the whole Nautilus craze, but if I was in this field to make a living or I was a collector looking to cash out, I would be willing to pony up for the box. $5,000 extra profit for an hour of bidding and a couple hours dealing with the auction house and logistics is an efficient use of work time.