I'm asking NO ONE to ask for a gift payment. It makes no difference at all to the seller if the buyer pays fees or the buyer sends as a gift, so the only difference is to the buyer.
If the buyer doesn't want to pay the extra they can send as a gift at their own risk.
Again, I can't make forum rules saying 'You cannot send as a gift', I can only advise you not to unless you think the seller is trustworthy enough to give them money without any insurance!