如果开发者决定要收费，他们可以制定价格，并拿到收费的70％，剩下的30％归苹果公司所有。

If they do decide to charge for their application, they can set the price, and keep 70% of the charge, with 30% going to Apple.

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这时候价格不是由正常的消费者和生产者决定，而是由投机者决定。

At this time, the price is not decided by normal consumers and producers but by speculators.

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尽管网站允许消费者比较价格并作出对自己财富最有利的决定。教授认为，基于价格的决策不会带来最大程度的快乐。

While the site allows consumers to compare prices and make the best possible decision for themselves financially, the professors argue that making choices based upon price may not maximize happiness.

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