“…Other prominent attacks, such as those in Madrid in 2004 and in London in 2005, probably cost less than US$10,000 (U.K. Home Office, 2006;United Nations, 2004). Much more expensive is the maintenance of a large organization committing terrorist acts or a major network of such organizations over a longer period of time, such as al-Quaida (Acharya, 2009;Haigner, Schneider, & Wakolbinger, 2012). Financing needs, as well as funding activities, of those committing terrorist acts vary greatly.…”