Mo. Rev. Stat. § 416.435: Sales of milk in combination with other products at less than cost — evidence.

1. No person shall, with the intent or with the effect of unfairly diverting trade from a competitor, or of otherwise injuring a competitor or of destroying competition, or of creating a monopoly, advertise, offer to sell or sell any milk product with any other commodity or service at a combined price which is less than the aggregate of the prices for which the milk product and the other commodity or service are offered for sale.

2. Proof of the advertising, offer to sell or sale of the milk product and any other commodity or service at a combined price which is less than the aggregate of the price for which the milk product and the other commodity or service are offered for sale is prima facie evidence of a violation of this section.