When used in sections 325D.09 to 325D.16:
- (a) The term "person" includes any individual, firm, partnership, corporation or other organization, whether organized for profit or not.
- (b) The term "employer" includes any person acting directly or indirectly in the interest of an employer in relation to an employee.
- (c) "Sale" or "sell" includes any sale, offer, or advertisement thereof or contract for the same.
- (d) "Sale of merchandise at retail" includes any sale except (1) a sale for the purpose of resale, or (2) a sale of a substantial quantity of merchandise for business use only.