The figure you mention is more or less correct for a new joiner , but this is ALL inclusive(flight allowance,house allowance...).
From those 9000U$ ,you can already substract EASILY 4000 U$ for the rent of your villa today in Doha....
Donīt forget if you come here better you try to save some money, Because its not the company that will take care of your pension.
So my wise Advice: DON'T be TOO impressed by the salary...