Shouldn't cost that much. It only takes me a few minutes to change/reset hands on a watch and I am far from a professional. Obviously a chronograph will cost more/take longer than a regular 3 (or even 2) handed watch. This is assuming that you are just changing the hands for aesthetic reasons and nothing is broken, if you are looking for service/replacement of the canon-pinion (that's the part that holds the hands on) it will cost much more.

Not sure about a pressure test, some places will do this for free after opening/servicing your watch if they have the equipment.

 

If you catch them in a good mood, free.

If not, maybe $40 total.

 

Got quoted $35, was hoping for a bit cheaper, but decided to go with it, I'll have it back thursday. Free would've been nice, but at the same time, they are the only watchmaker in my town, so I'd like to show some support too.

 

clever move. gotta support the little enterprises, they normally give better service.