Its common knowledge. Where do you get your information from? Do you really think the four of them sit around the table at dinner, and decide where they want to tour, which cities they want to go to, whether its stadiums or arenas, how many nights, and then after all that, they work out how much they need to price the tickets so they can make a profit or break even? Of course not. It's completely out of the bands control. They signed a deal with LiveNation giving them all the rights for their tours, look it up. LiveNation are the ones who work out where they're going to tour, how many nights are profitable, the tour schedule, and then the pricing of the tickets so they can cover the cost and make a tidy profit too. LiveNation are the ones who negotiate a deal with all the promoters, sponsors, arenas - who all take a share of the tickets. So naturally, LiveNation would increase prices so they can make more money as promoters and arenas demand bigger shares. LiveNation have also taken control over U2's merchandise, but no one buys music anymore because of streaming services, so they charge more for tickets to cover the money lost on people not buying music like they did 10 years ago. To think U2 actually have a say in what they charge for tickets after they've signed all the touring rights off to LiveNation is ludicrous.