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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If you reduce your caloric intake, as per Item #2 above, you will feel hungry at first. And that’s not easy.

如果正如第二条所说，你减少了热量的摄入，你当然会饿，这样的日子的确很难过，甚至很容易放弃计划。

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Note: There is a drawback in 'misusing' the category field for this purpose: Only one category is allowed per item.

注：为了达到这个目的，这里在“滥用”分类有一些弊点：对于每个条目只允许有一个分类。

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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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