well generally all the everyday running items are mostly standard in toyota,s and the basic reason for its largets market share internationally....
so spares like electronic sensors, door handles , generators and AC units are standard and not a problem at all,
the spares like wind screen, tail lights, interior AC knobs etc etc are an issue but i have heard people have started shelving such item s in karachi and lahore... or u can get em ordered thru dubai...
lastlly premio, camry, mark 2 and lexus are cars that dont require everyday maintainance like tune-ups, suspension issues, starting problems etc, provided they are kept with care and u understand em, u can go near 3 lac km,s easily on these machines if timely maintaince is carried out.
i suggest u go for it