UGflyer.
Luanda has a higher standard of living than the likes of any city in Switzerland or what you would find in any scandanavian country.
Sir, you should not allow your pre concieved notions about international economics and economies of scale to cloud your judgement on how things work in Africa, especially in the Peoples most Serene and Democratic Republic of Angola.
Big Buddah and Shrike are pretty much on the money in their assesments.
the annual income per capita would be for your average Angolan citizen to be able to afford the above prices.
The average Angolan citizen could only dream of of living in a cement built house with running water and electricity. More likely the average Angolan citizen, would be trying to eke a living from his mud walled grass roofed hut in the middle of the bush.
Just because the costs are expensive does not mean that the quality is good or that you are living in a nice place. Its the basic law of supply and demand which drives the prices (economics 101).
Also remember that as a wazungu in Angola , the locals would be aware that you are not there because of the scenic beauty of the place and are there working for some mega wealthy foreign company, so they will attempt to kazonga you for as much money as they can, which also tends to be inflationary.