Grateful Dead has sold out more concerts, more than a generations worth, let alone the merchandise and the "Dick's Pick's" that keeps coming out, even after the guy is actually dead. Paul McCartney isn't worth a Billion because he couldn't even outbid Micheal Jackson on the Beatles rights to their songs, that's why they are in so many commercials. I think Grateful Dead would be the top grossing band, in rock history. And yes, they still sell stuff like crazy.