Amazon have a big issue with fake stores. It is all down to how they use ASINs products. So if you list an item it is given an ASIN, anyone listing the same or similar canthen use that ASIN.
So take a genuine seller who sells Gas Monkey Garage T shirts. They set up a shop and crate 20 ASINS. They then set their price and sell away.
I can then open a marketplace shop and using a ASIN scrpaer get all theri ASINs in an Excel spreadsheet. THen in my shop i upload that and set my prices at less than half with a dispatch tome of two weeks.
People will buy these and I then mark as dispatched. At that point Amazon pay me.
Buyer waits two weeks, never receives anything and then complains, by which time the money is gone via several accounts/ paypals and i created a shop with fake details anyway.
Amazon then refund you.
However, the damage is done the genuine seller is lumped in with the dodgy one as they share the ASIN and loses business because of this.
Some or all may be an actual experience i am facing now but amazingly Amazon do not seem to care…