一个策略是把评估和类似项目的历史数据集合一起呈现。
One strategy is to present a collection of historical data from similar projects along with an estimate.
卖你自己的产品和从属项目营销类似，但还是也有很大的区别。
Selling your own product may be similar to affiliate programs marketing. But there are a few really big differences.
当使用公式得到最初的评估后，可以和过去类似项目进行比较。
When an original estimate figure is produced using a formula, it can be compared against similar projects that took place in the past.
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