Thanks for keeping it constructive gents, some good info in the responses, except for the Pratt above.
I forgot $2000 a month if you are lucky enough to park at work, with a large and increasing number of duties finishing after public transport and company buses finish, it's a case of "have to" unfortunately. Why is a 24 hour operation only serviced by transport for 16 hours a day? Make that 14 hours, ever tried to get on a bus during the lunch run? How about operating crew get priority at that time?
Medical top up insurance to get the inadequate insurance up to a level where your family is protected to the equivalent of Medicare NHS level, $40,000 and up depending on age. (PA and increasing annually). Make sure it is transferable to the country you wish to return to. Imagine trying to get health insurance at age 60 after breathing this air for 25 years, isn't going to happen, is it?
Gas is pretty cheap though!