This is the answer I've got from the eBay seller:

dear friend
if the spindle has problem ,we will exchange a spindle to you ,we pay the shipping cost
friend ,th e picturer you sent us can not be opened
could youplease resend it to us again?
(You can upload the picture video to web www.photobucket.com then give us the video link or you can send it to [email protected] ), and describe the problem, then we will see the problem and know how to resolve it. The more detail that you show the problem, the more quickly we can resolve this problem for you.
He seems quite responsible.