Complex sentence: It was a commercial failure due to its low quality and aggressive competition, in the first month 62,000 copies were shipped and the following month 64,000 copies were returned-bootlegged copies were sent back.
Split into simpler sentences: It was a commercial failure due to its low quality and aggressive competition. In the first month 62,000 copies were shipped and the following month 64,000 copies were returned, as bootlegged copies were sent back.