Idaho Code § 22-1601
It is hereby made unlawful for any person, firm, company, partnership, copartnership, corporation, foreign or domestic, or association, or other organization doing business in the state of Idaho, who shall intentionally for the purpose of creating a monopoly or destroying the business of a competitor, in any locality, section, community, city or village, to discriminate between different individuals, corporations, partnerships, copartnerships, associations or organizations of any kind or to discriminate between different sections, localities, communities, villages or cities of this state in the purchase, barter, exchange or resale of farm products, either in the raw or manufactured state, when such products are purchased or sold under recognized standards and grades, as prescribed by the department of agriculture, after making due allowance for the difference, if any, in the actual cost of transportation from the locality of purchase in the raw state to the locality of manufacture, or from the locality of manufacture to the locality of sale, and in addition thereto allowance in the grade or quality of such products, if any.
Idaho Code § 22-1601