The Board shall consider the following factors in determining whether to impose a penalty and the amount of any penalty: The extent to which the individual derived any financial benefit from the violation; The willfulness of the improper conduct; The extent of actual or potential public harm caused by the violation; The cost of investigating and prosecuting the case against the individual; The individual’s history of any previous violation; and If the penalty being imposed is for unauthorized practice, the length of time in which the individual engaged in the unauthorized practice.