Of course you can do that at Amazon's scale. Also $1 items can be verified economically, considering you're going to sell more than one of it. It will make life

Of course you can do that at Amazon's scale. Also $1 items can be verified economically, considering you're going to sell more than one of it. It will make life harder for very small sellers with low value items. But I doubt that those make up a big share of sold items.