Because it is owned and democraticaly controlled organization that serve their member ( who may or may not be themselves cooperative ) through cooperative marketing , support / or purchasing

Marketing Cooperative Society:
A marketing cooperative society is established to help small producers in selling their products. It is an organization formed by small producers who come together to collectively market their products and improve their bargaining power in the market. This type of cooperative society aims to eliminate the middlemen and directly link the producers with the consumers.

Role and Functions:
1. Collecting and aggregating products: The marketing cooperative society collects the products from the small producers and aggregates them to achieve economies of scale. This allows the society to negotiate better prices and terms with buyers.

2. Marketing and distribution: The society takes on the responsibility of marketing and distributing the products to various channels. This includes identifying potential buyers, negotiating contracts, and ensuring the timely delivery of products.

3. Quality control and standardization: The society ensures that the products meet the required quality standards. It may provide training and support to the small producers to improve the quality of their products.

4. Market information and research: The society provides market information and research to the small producers, helping them make informed decisions about production and marketing strategies. This includes information about market trends, consumer preferences, and pricing.

5. Financial support: The marketing cooperative society may provide financial support to the small producers, such as loans or advances against their products. This helps the producers meet their immediate financial needs and continue production.

6. Capacity building: The society conducts training programs and workshops to build the capacity of the small producers. This includes training on product development, packaging, branding, and marketing techniques.

7. Advocacy and representation: The society represents the interests of the small producers in various forums and advocates for policies and regulations that benefit them. It acts as a collective voice and helps in addressing the challenges faced by the small producers in the market.

Advantages of Marketing Cooperative Societies:
- Improved bargaining power: By coming together, small producers can negotiate better prices and terms with buyers, increasing their profitability.
- Access to markets: Cooperative societies provide small producers with access to larger markets, which they may not be able to reach individually.
- Quality control: The society ensures that the products meet the required quality standards, enhancing the reputation of the producers and increasing consumer trust.
- Economies of scale: By aggregating products, the society can achieve economies of scale in production, marketing, and distribution, reducing costs.
- Market information: Cooperative societies provide market information and research to the small producers, helping them make informed decisions and adapt to changing market trends.

In conclusion, a marketing cooperative society is established to help small producers in selling their products by providing them with collective marketing, distribution, quality control, and financial support. It aims to improve the bargaining power and market access of the small producers, enabling them to compete effectively in the market.