A marketing channel consists of the people, organizations, and activities necessary to transfer the ownership of goods from the point of production to the point of consumption. (https://en.wikipedia.org/wiki/Marketing_channel)
A marketing margin is the percentage of the final weighted average selling price taken by each stage of the marketing chain. The margin must cover the costs involved in transferring produce from one stage to the next and provide a reasonable return to those doing the marketing. (Agricultural And Food Marketing Management, FAO 1997, Chapter 12 Marketing Costs And Margins https://www.fao.org/3/w3240e/W3240E12.htm)
