أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Of course its Unethical, in which we are using money to induce sales growth, regardless negative impact(s) of such unethical attitude.
Its definitely unethical. As a business if you are unable to fulfill the order, you will need to refund the buyer.