In classic economic theory, when the price goes up, revenues per item rise but sales fall.

按照经典经济学理论，如果价格上涨，单件商品的收入会增加，但销量会下降。

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The fairest way to charge for the lunch would be to make people pay per item, so that those who eat more, pay more.

最公平的收费方式是对每样食品分别计费，这样吃得多的人就得多付钱。

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We can offer you a price of 8 pounds per item, from 20 days, after which the price will be subject to an increase of 5%.

我们给您报价每件8英镑，有效期20天，过期价格增加5%。

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It is not uncommon for retailers to tout free shipping benefits, but then charge a higher price per item to cover their expenses as a result of the shipping policy.

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The story spends extensive time on deciphering particular bills, using agents to get line items changed, and lowering the per-item cost.

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Until recently, bonus rewards where limited to just one item per purchase, but the chain recently lifted the cap as gas prices started climbing.

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