Chambers of commerce are helpful in gathering local information. Access to supplies and the ability to effectively distribute the product are vital. Decisions concerning the extent of product line or services are ultimately determined by the needs and wants of potential customers, and vary with changing trends, sales results, and customer demands or perceptions. Market analysis, product testing, and continued sales observance reveal customer preferences and reactions. A few products often account for the majority of sales volume.
Marginal products drain cash flow and management time.
Increasing management time or advertising dollars will not increase sales of a product perceived by consumers as defective or inferior. Offering even one poor product diminishes the image of a firm's other products. Modifications and changes in customer's perception of the product often extend product life. General customer analysis may be obtained from local chambers of commerce, media computer services and surveys, or business and industry publications. Reference materials are also available through the MDA library.