The problem is the eBay sellers always label defective stuff as simply new product.

People buying it may or may not be ok with the defect.

Think bad welds, usually they're fine for a while and then they're very much not.

It’s not hard to mark things as defective, liquidated, etc. so those eBay sellers can face fraud charges. We shouldn’t be sending stuff to landfills just to save a few pennies in permanent marker.

Had this recently, bought a dehumidifier for a good price, marked as new - arrived and had obviously been opened and didn't work. Out of a desire to have a dehumidifier sooner than later I was about to open it up when I saw it already had been, so I opened a return instead and sent it back.

I can only assume it is worth it for the seller to sell untested goods as new, a good number must work long enough for the buyer to be happy.