Excerpt from the report Summary: Every fluid milk market regulated by a Federal milk order in Kansas, western Missouri, and Oklahoma uses an average of prices paid by unregulated plants as the basis, or as one of two or more alternative bases, for setting minimum prices to producers for reserve and surplus (Class II) milk. This study covers the practices of 33 unregulated milk processing plants in the area mentioned. It was made to determine (1) how accurately the announced paying prices reflect prices actually paid for ungraded whole milk f.o.b. the plants, and (2) the composition, size, characteristics, and effects of supplemental payments made in the form of premiums for quality and volume, patronage refunds, bonuses, hauling subsidies, etc.