Mo. Rev. Stat. § 473.530

In connection with the sale, mortgage, lease or exchange of property, the court may authorize the executor or administrator to pay, out of the proceeds realized therefrom or out of the estate, the customary and reasonable auctioneers', brokers' and real estate sales fees or commissions, and any necessary expenses for abstracting, title insurance, survey, revenue stamps and other necessary costs and expenses in connection therewith.