Marketing efficiency is measured as the ratio of market output to market input. It can be improved by reducing costs for the same level of satisfaction or increasing satisfaction at a given cost. Marketing costs include all costs incurred by producers and intermediaries in moving products from farms to consumers. Marketing margins are measured as the differences between prices at successive stages of marketing. Common approaches to assessing marketing efficiency include calculating output-to-input ratios, total marketing costs, producer prices received, and consumer prices paid. Factors like perishability, bulkiness, and supply irregularity influence marketing costs.