The industry of "pay for knowledge" has proved to be lucrative.

事实证明，“知识付费”产业有利可图。

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However, the rapid development of "pay for knowledge" has a few problems.

然而，“知识付费”的快速发展也存在一些问题。

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The contents of these "pay for knowledge" products are from language learning to gardening or baby caring.

这些“知识付费”产品的内容范围包括语言学习到园艺或婴儿护理。

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Hence, a small logo on a jar of coffee means politically-minded consumers get to pay more for their daily cup, comfortable in the knowledge that the farmers who grew those coffee beans receive a decent price for their crop.

BBC: Free marketeers attack Fairtrade principle

Asian Pay Television, for example, plans to pay a yield of 8.4% in 2014, people with knowledge of the deal said.

WSJ: Asian Pay Television Poised to Raise $1.1 Billion in Singapore IPO

When businesses and non-profits consider the best mix of public relations and advertising, knowledge of what you get for what you pay can substantially increase your intended results.

FORBES: By Robert Wynne