That offer is too low for someone with your experience. For housing alone, you need to spend 3000 to have a good room in a villa shared with other people. Accomodation will eat much of your income. Another problem is transportation (public transportation is almost non-existent - sorry for the exaggeration). Taxis are too expensive (0.50 QR per 500 meters during daytime and 0.75 QR/500m on the night time), and busses plying around the city are too few, and usually the schedule has an interval of 30 minutes (that's the reason why you are forced to take a taxi instead of a bus to get to work). So, I don't think 500 QR is enough to cover your travel expenses. With the information you got, try to negotiate for more.
That offer is too low for someone with your experience. For housing alone, you need to spend 3000 to have a good room in a villa shared with other people. Accomodation will eat much of your income. Another problem is transportation (public transportation is almost non-existent - sorry for the exaggeration). Taxis are too expensive (0.50 QR per 500 meters during daytime and 0.75 QR/500m on the night time), and busses plying around the city are too few, and usually the schedule has an interval of 30 minutes (that's the reason why you are forced to take a taxi instead of a bus to get to work). So, I don't think 500 QR is enough to cover your travel expenses. With the information you got, try to negotiate for more.