What are the functions of consumer cooperative society?

Consumer cooperative society is that society that procure assortment of household goods to its members @ a cheapest possible price and ensures availability of this goods to its members @ anytime is been needed. However some functions they perform are as follows : (1) selling of pure and unadulterated goods (2) ensuring availability of goods (3) selling @ a very reasonable price (4) ensuring that the goods are sold with good measure and weight (5) helping the government in distribution policy especially during the period of scarcity (6) educating its members.