My prices are generally based on £ (or €) per 1,000 words of source text (the language your document is written in), but because all documents differ in their complexity, style and formatting I don't offer fixed rates for their translation.
The more technical a text the longer it will take to translate because of the lengthy terminology and subject research involved.
Seemingly straightforward texts can contain problematic cultural references or colloquialisms which take time to resolve or may require adaptation.
Word documents are far simpler to process than PDFs, PowerPoint presentations and Excel files.
Your quote will take all these factors into account.
If you need a document back urgently, I'll try to rearrange my other jobs to fit yours in. As this will normally require me to work late or over the weekend I do apply a 25% surchargeto these jobs, so it's best to allow as much lead time as possible.