If you are looking for the “right” time to sell so that you can get a good price for your watch, then it is less about the “Right” time and more about the time frame. If you are willing to wait for a good price, then you are better off than if you need a quick sale. The previous example about “needing the money” often sets you on a short time limit. Whereas, if you simply want to change your watch, perhaps because your tastes have changed or you want to trade up to gold from stainless steel, then you can wait a good long time to make the sale and get a better price.