Do the Cousins quietly marginalise on Ebay US products that flout safety regulations? I EU (and UK worse still) we let any old electrical rubbish in that has a self certified CE marking. There is a fake CE marking that is known as "China Export"
https://www.compliancegate.com/fake-ce-marking/
WE are flooded with dangerous garden floodlights with the green earth wire deliberately left unconnected to the aluminium casing - and thousands of other examples of a similar nature. No official action. Ebay dont care $$$$$
Any Cheap Charlie electrical goods are immediately suspect eg MC4s. If one seller is banned a 100 more renamed will pop up. Ebay does nothing about multiple listings for the same product from the same source (just change one letter in the title and it fools the BOT inspector.)