أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
I would thank the person, and explain that he is losing the deal not the sales person then stress on the benefits and advantages of the product you are selling, then explaining that there might be a good option else where but not to the level you are selling.
most likely even if the deal is not completed, the buyer will come back.
never force a sale.
