I have also seen co-ops where members could opt to do labour for both membership and food. And, although co-ops on the surface sound democratic, they can never

I have also seen co-ops where members could opt to do labour for both membership and food. And, although co-ops on the surface sound democratic, they can never achieve full democratic votes. I have participated with where I get to pick what I wanted from a pre-determined list that I had no immediate input to (the co-op "buyers" were), and I have also seen the list extended to "for the future". There was one where I got what I got, and had zero choice in what was in the basket. There was one where my "basket content" could be exchanged with anyone else within co-op, e.g. I had too much sugar beets and member X had too much kohlrabi. We wanted what the other had, bam! exchange made prior to delivery. This also helped with waste reduction. Good luck!