Adam Satariano, Cliff Edwards: Electronic Arts: Lost in an Alien Landscape. businessweek.com, 10. Februar 2010, abgerufen am 17. Dezember 2013 (englisch): „“Project Ten Dollar”, a coupon program to reward people who purchase a new game with downloadable content and upgrades. People who buy used games pay an extra $10 or more for the same goodies.“