See all kinds of ridiculous dollar amounts being thrown out there for the Stones concert. Personally I'd never pay that much to see them, but I'm probably in the minority on that. Love plenty of their records, but haven't seen much evidence of them being any good live for years. I know it's on some people's bucket list, but it's a lot of money to see a rock band that are in their 70's. I guess there's no harm in a band cashing in on their legacy as long as people are willing to pay the premium.
I just never bought into the idea of "being able to say I saw them" as justification for blowing two months rent on a concert or whatever. This is especially true when said artist is 100 years old. When I saw Willie Nelson last summer, I was hugely disappointed. People were actually walking out it was so bad. I've heard the same of Bob Dylan as well. People are rarely objective about the experience though when they unload that much cash to see a legend.