About: http://webisa.webdatacommons.org/311960470

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	Main things when buying used is to look for sellers with good feedback, who post thorough descriptions, and are willing to provide pictures, including close ups if they mention possible defects.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org