[Because advertisements generally cost less in tabloids than in broadsheets, the paper has focused on convincing potential skeptics of the format's benefits, said Carolyn McCall, chief executive of Guardian Newspapers.] We must have seen 600 clients and agencies before we launched the paper, ... We talked them through it - the vision, why it was so important, the design, the layout, how the ads looked - and every single media company has bought ads at the same value as before.