Ticketmaster and Live Nation face a U.S. antitrust trial over claims they hurt artists, venues and fans with high ticket prices.

The Guardian reported that Ticketmaster collects an average of $7.58 per ticket sold at major venues. According to an analysis cited by Jonathan Hatch, a New York attorney, fans in the states seeking damages may have overpaid between $1.56 and $1.72 per ticket.

The federal government announced plans to settle with Ticketmaster's owner, but states say it's still an illegal monopoly.