No part of any of the proceeds of the bonds provided for herein shall be used for the payment of fees, commission, expense, salary or other remuneration to any fiscal agent, person, firm or corporation for services in the sale, issuance, execution or refunding of the bonds provided for in this article, and the total attorneys' fees which may be paid for services rendered to the authority shall not exceed one half of one percent of the face amount of the bonds issued under the provisions of this article.