Cost of living in Rennes (France) is 135% more expensive than in Alexandria (Egypt)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 382 prices entered by 39 different people.
For example, you would need at least E£ 39,918 (€1,918) in Rennes to maintain the same standard of living that you can have with E£ 17,000 in Alexandria.