I will charge only $15... can I have the contract?
not unless your remaining $ go to wages and pensions for your union muffin makers.
You really need to know more about the details about these supposedly extravagant banquet charges before being too critical. I negotiate bookings for meetings, and review bills, all the time, and frequently find that the types of properties where meetings and conferences are held can be real SOB’s on charges. They may give you a meeting room but then charge you $16 per muffin, $150/gallon for coffee, and $200 screen and flip charge rental; the group in the adjacent meeting room may have paid $500 for the meeting room but only $4.95 per person for coffee and muffins. Banquet charges are pretty squishy; you have to look at the total bill.