That is a broad question. An educated dealer with extensive experience in the watch market will be able to gauge the value of a watch. A rolex is only worth as much as someone else is willing to pay...
First of all, the materials, platinum, gold, steel, etc. they are really expensive. then the craftsmanship. they are hand made really well. in Switzerland. importing. and part of it is just the name...
Cheapest? well the quality will be cheapest too :PRecommend you buy those middle price replicas, good quality, and looks more real.Local replicas market is never a good option, they charged way too...
Do you mean a particular model, or type of rolex? A Cosmograph Daytona chronograph in stainless steel is $13,000 compared to the Oyster Datejust at $4,000. Values can increase 12 X if the case is...