The international transaction revenues include transaction fees and other special fees like cross-border fee and currency conversion fee.

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At issue was whether nonunion employees may be constitutionally required to pay special fees to a union to help cover things like political spending on ballot measures.

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In a survey last November, Travelocity found car rental taxes (including special airport facility fees) at the 100 largest U.S. airports averaged 28%, up from 25% in early 2005.

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