What makes watches like Breguet and Patek-Phillipe etc such costly?pls read further.?

I am researching on this.


I wanna know wt comes in watches like above so costly,technically, i know it has brand name and its prestige.





but apart frm tht techioncally like wat gems,jewels or othr precious things are used.


(p.s omega with saphhires, rolex wid diamonds..,likewise n other technicalities which make it such costly)





thnx in advance.|||It is very difficult to make such watches and it requires skill. To drill and put in such tiny gems or precious stones in the right places, etc. Watchmakers are paid a lot to do this.