As a watch collector, I can assure you that the author of that blog post has no idea what he's talking about. The secondary market for luxury watches is huge,

As a watch collector, I can assure you that the author of that blog post has no idea what he's talking about. The secondary market for luxury watches is huge, and a Patek is about the worst example you could find in terms of a watch that doesn't hold its value over time. The nice thing is that a used luxury watch usually holds its value really well - you buy a used Rolex in good condition, for fair market price, and you are not going to lose money if you decided to sell it five years from now.