根据TNS Worldpanel的调查结果，2002年，年龄在12到19岁的人的消费额占了英国销售专辑总价值的16.4%。

In 2002 people aged 12 to 19 accounted for 16.4% of all spending on albums in Britain, according to TNS Worldpanel.

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销售者应该在努力增加顾客总价值的同时减少顾客总成本。

Sellers can try either to increase total customer value or to decrease total customer cost.

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