Why do some discontinued Rolex models trade well above retail? Take the Kermit...

https://record-wiki.win/index.php/Which_GMT-Master_II_Bezel_Colors_Get_the_Biggest_Premium_After_Rolex_Retires_Them%3F

Why do some discontinued Rolex models trade well above retail? Take the Kermit 16610LV and the Hulk 116610LV—both are beloved Submariner variants that collectors chase years after production ended