At Cost

At Cost means the Costs of Physical Sources have been recovered, but Profit is not collected except as pre-payment toward future production.

Any Price Above Cost paid by a user is treated as that user's investment in more Physical Sources so that user eventually has access to At Cost products as a side-effect of his ownership.

For example, the partial owner of an apple tree (a Physical Source) owns a percentage of those apples At Cost even before they are produced.