Sale of goods and performance of services — Public agencies

For the purpose of this chapter, the provisions of § 13-7-3 shall not include:

(1) The sale or exchange of convict-made goods produced in the public welfare institutions of this state, to or with other reformatory or custodial institutions, for their own consumption or use;

(2) The sale of goods, wares, and merchandise to any department, institution, or agency of any state or its political subdivisions; nor

(3) The performing of laundry services for other state institutions and agencies.