Bonds may be sold in such manner, either at public or private sale, and for such price as the Local Government Commission shall determine to be for the best interests of the authority and effectuate best the purposes of this Chapter irrespective of the interest limitations set forth in N.C. Gen. Stat. § 24-1.1, as amended, and successor provisions, provided that such sale shall be approved by the authority and the obligor. (1975, c. 800, s. 1.)