Under public provision, any fixed administrative costs can be spread over a large grounds of people. Instead of everyone spending time negotiating an arrangement for garbage collection, the negotiation is done by one office for everybody. The larger the community, the greater is the adgotiation in the advantage to being able to spread these costs. Similarly, a public school ststem that provides the same education in every school saves parents the time and effort involved in researching schools to figure out which are the good costs