On behalf of a friend, (I don't know anything about gps units)
Specifically for a tomtom: Can I buy a tomtom with NZ and Australian maps (or buy the maps later) and switch between them at will?
I see there is a very expensive model that has NZ, Aust, USA and Europe maps preloaded. Can I do the same thing with just Aust and NZ on a cheaper unit?
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