I have just come across this fascinating project.
Not sure how to tag it. " Social inventions" Perhaps?
"The first People’s Supermarket will open in Lamb’s Conduit Street, WC1, at the beginning of June. People who shop there will be able to become owners and members of the supermarket by paying a £25 annual fee plus giving up four hours of their time every month to work there. In return they will get a 20 per cent discount on everything they buy in the shop. The idea is that by not paying people to work at the supermarket, it will be able to cut down its overheads, which in turn will enable it to cut its grocery prices. "
You can find out more about it here.