Cost of living in Luanda

Hello all. Got a job offer in Luanda. Housing, bills, car and driver covered by the employer. But I have read so many horrifying stories about the groceries prices and time out that I am not sure the salary is good enough.

So, please, anyone, any idea on monthly supermarket expense for one person, mainly vegetarian?? To give you an idea, I get by pretty well with Protected content monthly on the usual european countries/cities. How much more would that be in Lunda?