For a shop assistant- especially for a fresher, above salary is industry standard. You can not expect much more for that particular post. It all depends on your employers requirement, not even your ability. There are lot of people here in Qatar living with family with a moderate salary around Qrs. 5,000/-. The savings all depends on your spending mentality. Anyhow, it is advisable to try for at least a sharing accommodation in addition to the above package.