The regulations for procurement of services relating to the investigations, research and excavation Article 8

The procurement managed in accordance with These Regulations shall have price calculated as follows:1. Cost-Plus-Fixed-Fee.2. The Lump Sum Fee may be adopted for definite scope or work or content.3. If the scope of work or content cannot be clearly determined, the compensation may be calculated by months, by days or by hours.
中文原文 考古遺址調查研究發掘採購辦法第8條
依本辦法辦理之採購,其計費方式如下:
一、採服務成本加公費法計費。
二、採購工作範圍或內容可明確界定者,得採總包價法計費。
三、採購工作範圍或內容無法明確界定者,得採按月、按日或按時計酬法計費。

English translation for reference only; the Chinese text prevails. Not legal advice.