In the issuance or sale of obligations, it shall be unlawful for the authority or any member thereof or any official:
A municipal bond dealer, banker, or financial expert may be engaged or employed as a financial advisor to provide financial services in connection with the sale of obligations, including the preparation of a bidding circular or prospectus, but no such financial advisor shall purchase any such obligations at any public or private sale, but any such purchase shall not affect the validity of the obligations and the authority shall recover any compensation and profit resulting therefrom to such financial advisor.
N.J.S. § 40:37B-24