A schedule of fees and charges to be assessed for the cashing of checks, drafts or money orders shall be filed by each licensee with the commissioner annually on or before a date to be set by the commissioner and, together with any revisions thereto, shall be conspicuously posted in each place of business and mobile unit of a licensee. An amendment to such schedule occurring between filing dates or a change in the hours of operation, as specified in the application for license filed pursuant to section three, shall be filed, in writing, with the commissioner forthwith.
Mass. Gen. Laws ch. 169A, § 6