 In August 2018, New Zealand's Commerce Commission sued Viagogo after it sold non-existent tickets for a Bruno Mars concert for NZ$700.On 27 November 2018, the UK Competition and Markets Authority stated that Viagogo had, effective 17 January 2019, agreed to perform a "comprehensive overhaul" of its services in order to improve their transparency, and strengthen the guarantees it provides to consumers.Among other changes Viagogo agreed to list the identity of the seller and whether they are a professional trader (defined as performing more than 100 sales in a year), as well as seat numbers and the original face value of the ticket, and any risk that the ticketholder may be turned away due to resale restrictions.