SDCL § 37-2-2: Price differential to meet competition permitted.

Any person, firm, company, association, or corporation selling gasoline, kerosene or liquefied petroleum gases in more than one section, community, or municipality, may lower prices in any given section, community, or municipality, to but not below the prices for which others are selling such commodities in such section, community, or municipality, when necessary to meet actual legitimate competition in such section, community, or municipality, without being held to have violated the provisions of this chapter.