There is a process to everything, and selling a watch is no different. The first step is to get a quote. Some dealers may try to fool you when quoting by skipping important details. This is why it is important to approach a dealer who is trustworthy and not someone who is looking to take advantage of you.
Ask the dealer to explain the entire process to you. The cost of watch appraisal, legal formalities, and method of payment should be made clear well in advance.