About: http://webisa.webdatacommons.org/372752352

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	However I think unless a very well designed in-app purchase system ( ie one which would really generate revenue ) is in place, the best strategy is probably to go for a higher price tier and hope to make more revenue with less sales.
http://www.w3.org/ns/prov#wasQuotedFrom	blogs.com