1) Agent 2) Clerk 3) Dealer 4) Rep 5) Retailer 6) Salesclerk 7) Salesgirl 8) Saleslady 9) Salesman 10) Saleswoman 11) Seller 1) Employee 2) Staff member 
[n] - a person employed to sell merchandise (as to customers in a store or to customers that are visited)
sales representative noun a person employed to represent a business and to sell its merchandise (as to customers in a store or to customers who are visited)