This is why I hate the "marketplace" of these stores. In many cases these products never hit their inventory at all, they are functioning like a search engine and payments processor.
At some point in the second half of the 2010s Amazon figured out they can’t compete with a million foreign randomly-generated companies on price, and their users didn’t seem to mind too much. They figured their users cared about delivery times, ease of returns, ease of dealing with Amazon instead of dozens of online sellers, etc and they leaned heavily into that. They will handle fulfillment and take their cut and let people buy whatever garbage they want. They still screw sellers too btw. Ask any one who is trying to sell something on Amazon and they will fill your ear with how much leverage amazon has over them. You can check r/FulfillmentByAmazon/ Or r/AmazonSellers for stories.