Bit difficult to give a dollar figure as the way they work out the salary for 6 on 6 off must have been done on the back of a child's exercise book by a blind bureaucrat with an IQ in single figures! It's not the same every month, but overall, the annual figure is around US$49,000. Out of this you have to buy food, but it's pretty cheap in the Emirates and you get to spend quite a few nights every month offshore, so naturally you get (really good) free food for those nights.
But hey, there's a really big pay rise on the way ehhh....!