Once you join the co-op, you (along with the other members) will ultimately own the operation but not be responsible for any debt the co-op might incur. As the co-op grows, so does its negotiating power.
When an Organization/Clinic/Firm joins the co-op, they are considered a member with one vote.
Membership fees are low. The co-op guarantees that you will save more than you spend, or your membership fee can be returned.