Warehouse clubs function in a similar way by offering products in bulk to consumers who pay membership fees.
This is possible due to the sheer volume of buyers, which drives down prices and allows each group or individual to benefit from economies of scale.
Collective buying power plays a good role in reducing costs, as it ensures that purchasing decisions are made with consideration for both quality and cost-saving measures.
The first, a consumer behavior definition, found in economic psychology implying the income available for discretionary spending among segments in the population.
Power may be based on reward abilities (granting monetary or perceptual benefits), coercion, legitimacy, personality, or expertise.