For example, The Who is my favorite band and arguably one of the greatest bands ever...but their album sales in America at 21MM are (relatively) pitiful. Hendrix is also "bad" at 21MM.
The top selling artist (millions of album-equivalent units sold) are:
The Beatles (183)
Garth Brooks (148)
Elvis (139)
The Eagles (120)
Led Zeppelin (111.5)
Billy Joel (84.5)
Michael Jackson (84)
Elton (78.5)
Pink Floyd (84)
George Strait (69)
Had to look up George Strait.
Boy there’s some good bucks to be made in country music :)