What if we expand the concept that Kheprw Institute is doing with their Community Controlled Food Initiative (http://kheprw.org/ccfi/) to multiple locations, and build a network? Would this increase the buying power and keep the pricing low? Apartment complexes and other community centers would be a great starting point.
FarmersMarket.com is doing the delivery aspect to some extent (with locally sourced foods) by bringing it to local pick-up points so that people do not have to pay a delivery fee.
Could we combine their delivery/joint pick-up model with local community organizations/apartments?