we are not talking about banning the import of regular products, but about donated or second hand items that are sold for next to nothing, half of which is useless junk. the point is to not allow these inferior imports to undercut local products, not to make any imports more expensive than local ones. the latter happens too, and it's stupid, but just because that is bad, and we should be allowed to sell our products, that doesn't mean that we should also be allowed to dump our junk that we don't want in those countries too.
there are people in developing countries where this is a treasure. Trust me, I've been to such countries.