Except as hereinafter provided, all products thereafter procured by or for the state, or any governmental agency or political subdivision thereof having its own purchasing agency, shall be procured in accordance with applicable specifications of the state purchasing agent from the commission for the blind or duly established agencies or branches thereof whenever the products are available at the price determined, as provided in Section 22-14-21 N.M. Stat. Ann., to be a fair market price for the product so manufactured, and no advertisement or notice for bids from other suppliers shall be necessary.