fo: with per diems, flying 90h per month, about 190,000nt, you also get 13th month+tax return(depends on your family circumstances). Last year I got 160,000nt tax return so all in all with good flying 90h per month or so clear 75000-80000usd per year. Taxes in your home country are your problem.... This is a commuting job, I would say less then 5% expats actually choose to live in TW. In that case you get some housing which is just ok. Not great but not that bad either.
As long as your hours are up around 80+ every month than its decent.