There are hereby exempted from the provisions of this chapter and the tax imposed by it, gross receipts received by a retailer from a manufacturer, wholesaler, or distributor pursuant to a written contract between the retailer and manufacturer, wholesaler, or distributor that requires the retailer to display the manufacturer, wholesaler, or distributor's product or signage in a specified manner or location. Any discount or deferred payment received by a retailer from a distributor, wholesaler, or manufacturer for purchasing a product for sale at retail does not constitute gross receipts subject to the tax imposed by this chapter.
SDCL 10-45-1.6