Complex sentence: Since its inception, Pearl Jam has sold well over 32,000,000 albums in the US, including all of the band's live official bootlegs, the band's U.S. sales number is uncertain but it is well over 32 million, and an estimated 60 million worldwide.
Split into simpler sentences: Since its inception, Pearl Jam has sold well over 32,000,000 albums in the US, including all of the band's live official bootlegs. The band's U.S. sales number is uncertain but it is well over 32 million, and an estimated 60 million worldwide.