Mo. Rev. Stat. § 301.3154

Beginning January 1, 2005, the fee for any special license plate approved under section 21.795, sections 301.3150 and 301.3152, and this section shall be fifteen dollars for an annual registration and thirty dollars for a biennial registration in addition to registration fees. The provisions of this section shall not apply to special military license plates. The fees for special military license plates shall be assessed as provided for by the statute creating such license plate except that no additional fee shall be charged for personalized military plates.