Given your distance from the US, I would suggest buying two airbrushes. That way you always have a spare on hand. This immediately nets you spares of everything. And if the airbrush needs to be sent back for major work, you still have an airbrush. I'm "only" in Canada, and I've opted to have numerous airbrushes "Just In Case": two 100LG (one fine, one medium), one 150 medium, and a 200-20 medium. All share head assemblies, and the 100/150 share needles. This way I have multiple head assemblies and the capablility of just switching airbrushes.
I would still encourage you to stock up on the "consumables" as they have a tendency to break, bend or wear out when you least want them to:
PN 50-0402 medium needle (maybe get 2 or 3?)
PN 50-055 Head Washer (cheap, get a bunch!)
50-0141 O-ring (ditto cheap, ditto bunch)
You might consider ordering these parts as well:
50-0162 Medium Head Assembly complete
50-046 Needle Guide*
*this is considered non-user replaceable, and Badger suggests returning to the factory. I have successfully changed using a spare needle and holding my teeth correctly. It took some fiddling around. The good news is they rarely wear out.
Cheers,
Bill