nakbin, I send mine (navitimer world) from Abu dhabi for a full overhaul (5 year visite) 3 months ago.
Job done in dubai service centre, 6 weeks long. Back like new and no issues since.
The official fees are available there :
http://www.breitling.com/multimedia/...v/sav-1161.pdf
That's exactly what I paid for (2900 AED).
They claim having changed the crown and set of hands free of charge.