I have had one of thos 50G+ jobs in Saudi. I made $5800 a month. Let's take away $1000 for rent.
Now. Let's go around the room of 20 or so students. the first 4 or 5 are having a conversation. The next 4 or 5 are having another conversation. The next 4 are looking at Porno on their cell phones. and then another 3 or 4 are having another conversation. There are only about 3 students actually paying attention.
These guys have been there 8 hours a day for two years and are completely burned out and have no interest in what you are saying. The day I was to leave they asked me if I wanted to stay and make some more money. I told them NO that I already had a contract in Russia for 600 bucks a month. I had a much better time in Russia at a greatly reduced salary. Think... They don't pay those salaries because it is fun.