摘要：The effect of in-store sampling promotions was monitored for six products in a large, modern supermarket. During the promotions, sales of the products concerned rose very substantially. This was offset to some extent by a decline in sales in the weeks following the demonstration. Sales of competing products fell slightly during the promotions, typically by around 10%. The direct costs of holding a sampling demonstration, excluding costs of managerial staff time and of the product used in the demonstration, were generally found to exceed the immediate increase in net sales revenue during the event. It was not possible to estimate the value of any long-term benefit there may have been from increasing product awareness
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