About: http://webisa.webdatacommons.org/432124330

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	I???m not sure what you mean by ???real??? cost other than ecological, and I think in that case you might have also not seen the benefits.
http://www.w3.org/ns/prov#wasQuotedFrom	hackaday.com