About: http://webisa.webdatacommons.org/175462586

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	if people will not pay, then it is overrated. if there is a market for them at a given price, he is where they are rated. he is the only rational metric you need so as to answer the question.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org