(a) Costs incident to sampling, tagging, and identification of samples and transporting samples to points of shipment shall be assumed by the producer, but tags and containers for the shipment of samples and shipping charges via U.S. Postal Service or duly authorized common carrier will be furnished by the service. After classification the samples shall become the property of the Government. The proceeds of the sale of cotton samples shall be used to defray the costs of providing the services under this subpart.