Cosmos, 24, fell into the business a few years ago while working at a bar, where he changed some local money for foreign tourists who had US dollars, or "green leaf" as he calls it. The roughly US$150 a month he makes in profit helps support his mother and pay the educational costs for his younger sister.
Dressed in a worn T-shirt bearing the slogan, "I'm saving for my retirement are you?", Cosmos told IRIN that one of the gauges used for the US dollar-Zimbabwe dollar exchange rate was the fuel price.
