The webapp provides for each item the link on ECB's website.
Speeches for : Lucas Papademos, Jean-Claude Trichet where "costs" appeared
2008-10-02 : Introductory statement with Q&A2005-10-06 : Introductory statement with Q&A
2004-11-04 : Introductory statement with Q&A
2004-07-01 : Introductory statement with Q&A