Luxury brands obviously do very well - it's their demographic in large numbers. But likewise gift stores - so many people using up the last bits of currency, or desperate travellers needing to get something nice for their spouse or child, and with time to kill. But luggage mystifies me also - were I to buy a large suitcase at the airport, what would I do with it? I can't take it aboard the plane, and in most airports it's either very difficult or impossible to go back landside to check it in.