Hi
living in qatar is not cheap but it is depends on your salary and your life level any way this is some main expenses:
Home: one room 2000QR 2bed flat 7500 Villa 15000QR
Car: small car 34000QR M car 75000 Nice&Luxury car 175000
Bently 900000
Food:KFC twister 8QR arabic meal 20QR pizza or pasta 28QR open buffet in hotel 200QR
Laundry 6QR for shirt 15QR for suit
Mobile: international call about 3-4 QR
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if u have family with 2 kids u need about 15000 QR monthly
if u are single you need 5500QR
this is the normal level
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any way u can find one man living in qatar and his salary 1000QR and he save 400QR per month to send it to his original home.