In selecting channels of distribution, the seller must make decisions concerning, the degree of control desired over the marketing of the firm's products. Some manufacturers prefer to keep as much control over their products as possible. Ordinarily, the degree of control achieved by the seller is proportionate to the directness of the channel. One Eastern brew-ery, for instance, owns its own fleet of trucks and operates a wholly owned delivery system direct to grocery and liquor stores. Its market is very concentrated geographically, with many small buyers, so such a system is economically feasible. However, all other brewers in the area sell through distributors.