Purchase cost Free This class refers only to the cost of the resource, not to the definition of "free software" as provided by the GNU Project and which is commonly used to describe software that respects users' freedom and community (http://www.gnu.org/philosophy/free-sw.html). Allyson Lister Allyson Lister Free is a type of purchase cost clause which, when applied, means that there is no cost for the users of the resource to which the license is attached. This clause can be combined with other clauses (such as usage clauses) to specify that only certain usages are free.