At the front desk, a guest asks some questions to the hotel manager. Read the dialogue and answer the question.

Guest: We would like to hire a bicycle to go around and those green hills.

Manager: Okay, I may bring your bicycles tomorrow from the town.

Guest: Oh! Thanks a lot. Do you know how much it will cost for a day?

Manager: Hiring a bicycle “shouldn’t” cost more than 10 Turkish Liras.

What does the modal “shouldn’t” stand for in Manager’s respond to the guest?