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The food co-op where shoppers are happy to work

The Park Slope Food Co-op in Brooklyn, New York is not only owned by its members, but it is run by them too.

In fact, all members are required to work a shift of two hours and 45 minutes every four weeks in order to be able to shop there.

Members of the Co-op tell the BBC why they're happy to put in the hours and what they get out of it.