بسم الله الرحمن الرحيم
It is not ibadat to recite the holy Quran for the blessings and prosperity of shop, house etc rather it is a kind of treatment for worldly purpose which is lawful; hence it is lawful to call Hafiz for recitation and give him some gift. The Hafiz is also allowed to receive the travel and other expenses.
نعم لو كان الختم لمطالب دنيوية طاب له الأجرة (فيض البارى)
Allah knows Best!
Darul Uloom Deoband