Apple and Amazon have successfully defended against a £600 million ($600 million) lawsuit in the UK that alleged they colluded to limit the number of resellers for Apple and Beats products on Amazon. The case, which was dismissed by a British tribunal, was brought on behalf of approximately 36 million consumers. In a separate ongoing case, Apple is facing a £1.5 billion ($1.8 billion) class action lawsuit regarding the commission fees it charges third-party app developers. During the trial, Apple's chief financial officer testified that the profitability of the App Store cannot be accurately measured, and he denied claims that the company enjoys a 75% profit margin on its App Store operations. This testimony marked the first time a senior executive from a major tech firm has appeared in a UK antitrust trial.