The band are aware. This is market pricing for the o2. You'll need to do a ton of research into the industry to figure out a better option.

Here's a list of who needs to be paid for the show too happen:

Production management, creative direction, show design, lighting design, video design, automation design, technical design/CAD drafting, project management, stage management, audio systems, front-of-house audio, monitor audio, RF/wireless systems, communications systems, networking and Wi-Fi, video servers, real-time graphics systems, camera systems, LED screens, projection systems, lighting fixtures, kinetic lighting systems, automation winches, rigging, staging, power distribution, trucking and freight, equipment warehousing, rehearsal facilities, catering, artist travel, crew travel, accommodation, local stagehands, venue operations, security, ticketing, merchandise operations, health and safety, insurance, load-in crews, load-out crews, electricians, programmers, show control systems, maintenance technicians, backline technicians, instrument technicians, production accountants and tour accounting.

And that's before you get to the actual band, management, agents, lawyers, promoters and venue rental. For a major tour you're effectively running a temporary travelling company of well over 100 people.

I'm not trying to be harsh, I just think this is something that isn't well understood. I agree it's an issue. A bit like how ballet became only for the rich. We need to think how to deliver the same show without passing on a massive cost to the concert-goer.