Chickenfoot > pink floyd&nirvana

I'd have to give 2 reasons as to why this happened:
1)Most people who already own Dark Side of the Moon, have no real reason to buy another copy.
2)Most people who listened to Nirvana when the album came out, have long since stopped listening to Nirvana. I don't know how true this is, it's just wishful thinking.

I never buy reissues either. If I hadn't heard chickenbeak before are a guy on the street corner was offering me one of those three albums, I'd probably take the one I don't own: chickenliver.