Mayonaise is cheaper then butter

Lagos -  Bread hawkers in Lagos used to go around with butter or margarine; some people who buy the bread would like to have it cut in half with butter richly spread over on it. This is given as a sort of value added service.But some of them have discovered mayonnaise is cheaper than butter or margarine so they go around hawking bread now (like the girl in the photo) with jars of mayonnaise instead.
Toye Gbade – Lagos Lab