About: http://webisa.webdatacommons.org/253623968

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	As people mentioned, the 20% does not appear to stack with the LS deal but the total does come out to $50 before shipping and taxes (which is a huge chunk of change as others mentioned).
http://www.w3.org/ns/prov#wasQuotedFrom	slickdeals.net