All money received by the commission for the blind or any duly established agency or branch thereof from the sale of products manufactured by clients of the commission for the blind to the state, any subdivision thereof or any other purchaser shall be placed in a special fund, which shall be used only for ordinary and necessary business expenses and to purchase raw materials, supplies and capital improvements for the manufacturing of products and to pay such compensation to the clients manufacturing the products as may be determined to be reasonable by the commission for the blind.