Question about Thule BackPac 973

Dear Ladies and Gentlemen I have a question: in the description of the used Thule BackPac 973 it says: Visible impairment Included in delivery: Thule BackPac 973, mounting material, manual. The packaging has been opened, has glue marks and is torn. The corners are falling apart easily. Does this mean that the Thule Kit 973-15 is already included or does this have to be ordered separately? and also: the corners fall apart easily... What kind of corners - the ones from the packaging or what? Thank you very much in advance for answering these two questions. Kind regards Sandro