I see it in a number of ways. whats reasonable or not is relative and subjective.
seeing a $20 show at a 600 capacity venue is different than $20 at a 20,000 capacity stadium also.
I get bummed at ticket prices myself. I don't have much spare change to put toward entertainment. I think an artist has a right to charge what they want or what they think they deserve but high prices put it out of reach for the average person. I know it doesn't all go the artist too and that there is a higher cost to put on a show at a large venue compared to a small one, but it is disconcerting.
I'd like to see Clapton but I doubt I would ever put my money out even for $65 tickets.
I don't feel like he owes me or anything though. but the out of my (being someone who has worked full time my entire age 21+ and a anumber of yrs prior life) and others reach ticket prices suck. not paying them doesn't make me less of a fan. feeling like I need to offer myself to get reamed makes me want to be a fan less....
if that makes any sense.
I like to hear Joe do Forever Man. Clapton's version is something I am thankful for, hearing him do that the song brings me joy and makes me want to do air-guitar and sing.
anyway i guess the bottom line for me is I hope that Eric Clapton and even Joe know that there are plenty of people who enjoy their tunes and such and just because they can't afford to go the show or to buy lots of copies of their cds doesn't make them a less valued fan.