This article shall not apply to:

(1) Farmers or groups of farmers in the sale of agricultural products grown by themselves;

(2) Persons who buy for cash, paying at the time of purchase in United States currency, certified check, cashier's check, or the equivalent; or

(3) Holders of food sales establishment licenses issued pursuant to Article 2 of Chapter 2 of Title 26, the "Georgia Food Act," who conduct no business at the wholesale level and who have fewer than ten employees.