About: http://webisa.webdatacommons.org/3979848

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	A cost of production might indeed influence their value indirectly: but it would be the cost of tools made of hard steel and other materials of which the supply can be increased to keep pace with demand.
http://www.w3.org/ns/prov#wasQuotedFrom	libertyfund.org