In addition to other authority granted him by this part, the Commissioner of Agriculture shall be authorized to deny issuance of, or to suspend or revoke, any license provided in this part for any violation of this part, or upon a finding that the applicant or licensee has engaged in conduct contrary to the expressed intent and purpose of this part with respect to discrimination in the sale of tobacco. In the determination of discrimination in the sale of tobacco, the Commissioner is authorized to consider, among other factors, the solicitation of tobacco for auction by an applicant or licensee in such manner as to deplete unreasonably sales opportunity required for the equitable movement and sale of tobacco produced in this state.