This ticket sale happened under very special circumstances in our lives:
during an extended concert draught going on 14 months, after a 14 year absence from live shows by a not-so-young band and during a difficult financial period for many fans.
That said, I am surprised that ticket prices are so high for the North American shows that are cost prohibitive for the majority and will leave many out in the cold.
However, it is your own prerogative to go or stay home, no one forces you to spend $800 or more on a ticket. But some bands have lower priced general admission ticket policies made available but to do this in an arena, is difficult to do. I think that it would have been more feasible and practical to schedule one stadium date instead of two nights in an arena like Genesis did in 2007 in Europe, Montreal and the Meadowlands, NJ for example. Then, cheaper tickets could have been made available for fans who can't afford the expensive ones. Just saying...
One last thing: those of us fortunate to have a steady income and extra cash stashed aside and have not spent any of it on concerts or travel for so long, now have certain flexibility to spend it on a more-than-normal price to see Genesis. I am one of the lucky fans who took advantage of this opportunity to once again see the band live - maybe for the very last time I might add.