A sliding scale of fees is used for operations so that richer customers subsidise poorer ones.

按比例计算的费用会用于手术费用，这样富裕的病人可以资助贫穷的病人。

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The users win economies of scale, in the form of lower fees, and the ability to move capital quickly and easily across borders.

ECONOMIST: The prospect of a transatlantic merger is long overdue

The first minister hit back saying his government would provide a Scottish solution to the "extraordinary" situation that would be implemented on exactly the same time scale as the implementation of the hike in tuition fees south of the border.

BBC: First minister's questions

The management company charges a fee for managing the aircraft, but many aircraft owners assert that the discounts they obtain on insurance, fuel and training based on economies of scale and bulk buying power often exceed the fees charged.

FORBES: What's The Best Jet For You? (Part 3)