- Monthly rent (luxury apt.): $4,513
- International newspaper: $5.37
- Cup of coffee: $6.98
- Gas (per liter): $1.74
Home to 13.2 million people, Tokyo is one of the most densely-populated cities in the world -- and that means real estate comes at a premium. Rents here are among some of the most expensive on the planet, with luxury two-bedroom apartments going for an average of $4,500 a month, according to Mercer.