salax, it's because most of what you saw (esp. in filipino adds) are but "sharing accommodation" in which doesn't even fall on your so called "independent accommodation"
those that you wishes to get falls to categories that price is about that level (more than 3k, i guess), henceforth those people wanna share the place has the right to choose, but for those who offers independent spots often ask a higher price...

and just a thought, is there any "affordable housing" in qatar? only those of sharing rooms and bedspacers you'll might find...

^_^ bro, think clear and re-read of your statement and no offense and if ever you'll find one, well you're just lucky, i guess...