Cost of living in Rennes (France) is 132% 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 281 prices entered by 34 different people.
For example, you would need at least E£ 39,516 (€1,874) in Rennes to maintain the same standard of living that you can have with E£ 17,000 in Alexandria.