Mo. Rev. Stat. § 108.928

The board of fund commissioners shall offer such bonds at public sale and shall require a deposit of such sum with each bid as will in its judgment be sufficient to guarantee the fulfillment thereof and generally shall conduct the sale or sales under such rules and regulations as shall to it seem advisable, provided the same are consistent with sections 108.925 to 108.933. The board may reserve the right to reject any and all bids. All expenses incurred by the board of fund commissioners in issuing the bonds, or any part thereof, and attending the placing of the bonds on the market in a marketable condition, shall be paid by the state treasurer out of the proceeds of the sale of bonds upon warrants drawn by the commissioner of administration to persons entitled thereto.