Cost of living in Jeddah (Saudi Arabia) is 140% more expensive than in Alexandria (Egypt)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 734 prices entered by 71 different people.
For example, you would need at least E£ 35,994 (﷼ 7,536) in Jeddah to maintain the same standard of living that you can have with E£ 15,000 in Alexandria.