About: http://webisa.webdatacommons.org/188667860

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	You still pay the same price for Apple OS upgrades, you just pay it when you purchase the machine, instead of multiple system os upgrades. too expensive is an opinion not fact.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com