Any "servicing" offers from dealers, are to be taken with a pinch of salt. The dealers in question don't even get the watches in hand before they are shipped to you, so how exactly are they ensuring servicing? How can a dropshipper oversee servicing? They Can't, and anyone who believes this is actually happening, needs to be educated as to the truth.
Sorry, but this is true, plain and simple, they will either plain lie to you, "yeh it's fully serviced yada yada" or best case, they think it's getting serviced, costing them less than $10 and in fact the guy who is doing it, who is in another country, is actually not bothering, and just creaming the cash.
either way you are getting screwed. Save the $120 or $200 or whatever, take it as it is, if something happens to it, or you really want it serviced, send it to someone who is tried and tested in that area, and not someone who is trying to cream as much money off you as humanly possible. especially when that person has NO contact with your actual watch.
Avoid this crap like the plague! Waste of time and money, you'll pay whatever to get it done by them, and then the same again to get it done by someone who actually knows what they are doing.