<http://schema.org/description>
"In an effort to increase its supply of certain iPhone models during the month of June, electronics buy-back service Gazelle is offering to pay an additional $20 on all working iPhone 4 and iPhone 4s trade-ins for the next 7 days."^^<http://www.w3.org/2001/XMLSchema#string>
<http://appleinsider.com/articles/14/05/30/gazelle-paying-an-additional-20-cash-bonus-on-all-iphone-4-iphone-4s-trade-ins-thru-june-6th>