About: http://webisa.webdatacommons.org/232021335

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	So, as was mentioned above, one of the reason of the low price is that there are some alternatives that are freely available.
http://www.w3.org/ns/prov#wasQuotedFrom	themeforest.net