Alibaba is a respectable brand
Out East, where I have family, Alibaba is a reputable source of B2B sales. It has networks across most of Asia. Sure there have been some dishonest sellers who have been acted on and execs sacked as a result of this going down on their watch, but when people have been sold stolen, misdescribed or fake goods through Amazon or eBay who was fired? Exactly.
It is almost entirely unlike eBay as its not an auction site and is not open to the general public in the same way.
If anything its like an online version of a wholesaler like Makro