There's a few I'd pay £91 to see; The Rolling Stones, The Who, Bruce Springsteen..
Then there's those that I'd pay a lot more to see if they reformed; Pink Floyd, Led Zeppelin (probably go up to a grand to see them)
There's also those who are no longer here that I'd pay a lot of money to see; Hendrix, The Doors, The Clash (first time I saw them it cost me £2), The Ramones