Is the charge simply usage-based (" pay per click "), or does the charge have to consider the quality of service achieved (for example, response time)?
收费是基于使用情况(“单击一次收费一次”)，还是必须考虑服务所达到的质量(例如，响应时间)？
The other solution, however, few will like: charge based on usage rates, instead of just a flat monthly fee.
还有另一个解决方法，但是，很少有人会赞成：按使用率收费，而不是仅收取月租费。
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