Is it permissible for a seller to say to customers: "A carton of tomatoes for (10) dinars, and invoke blessings upon the Prophet—peace and blessings be upon him—"?

Some فقهاء (jurists) disliked invoking blessings upon the Prophet (peace be upon him) when displaying goods for sale, because it implies an intention to enhance the merchandise rather than seeking divine reward. Ibn al-Haj mentioned that invoking blessings upon the Prophet (peace be upon him) should only be done as an act of worship and drawing closer to Allah. He also stated that Sahnoon disliked saying "peace and blessings be upon the Prophet" when expressing astonishment. Mulla Ali al-Qari reported from the Hanafis their dislike for a market vendor to invoke blessings upon the Prophet (peace be upon him) when displaying his goods. Al-Nafrawi mentioned the disliking of invoking blessings upon the Prophet (peace be upon him) in situations such as expressing astonishment, slaughtering, sneezing, selling, in the bathroom, in the lavatory, during intercourse, and in any impure place.