Clarify which records are relevant and what translation is required before commissioning unnecessary work. Official charges and professional fees should be identified separately.
Budget for useful evidence
Ask whether the scope includes reviewing technical explanations and coordinating with company record holders. The cost of gathering evidence does not establish its relevance or guarantee approval. Confirm additional work if the assignment changes.
Scope the review before commissioning translations or technical summaries, since these are the costs that expand without anyone deciding to spend more. Ask three questions in the engagement: which records will actually be relied on, who converts technical material into something a non-specialist reader can follow, and what happens to the fee if the assignment changes. Hypothetical example: a company translates an entire maintenance archive for a coating-line specialist when four dated log entries and one procedure would have carried the point; the money is spent and the argument is no stronger.
Government charges are set by the agencies and change from time to time, so confirm current amounts at the point of filing rather than working from a figure remembered from an earlier case. Ask as well who pays if a record holder inside the company is slow, since delay is usually billed as additional professional time rather than absorbed. Agreeing that point in advance avoids an argument at the least convenient moment.