Yeah food co-ops are awesome but they don't expose that kind of information to the casual shopper. Even most members. Even if you're very actively involved you'd have to strap together multiple spreadsheets and receipts to come up with something like I'm describing

I guess I'm thinking of something like dynamic pricing, except instead of it being used to manipulate consumers into paying the most they can possibly pay, it's used to give you really transparent, real-time information about what goes into that final pricetag