Without being too outing as to my job and company, I offer a service along the lines of proof writing, reviewing important reports, policies and documents to ensure they are complaint with the relevant law etc.
I do tracked changes and comments on each document and write a report of recommended improvements/additions and the client can either take that forward themselves or I can rewrite it all for them.
I tell clients my hourly rate but they nearly always insist on a 'final' cost before deciding whether to book me.
They then say oh its only a few documents and it shouldn't take more than a few hours, then they take the piss by sending me loads of documents, or those 'few' documents end up being 50 pages each or something.
So how do I provide an accurate quote to those asking for an accurate final quote when I don't know how many pages or documents they will actually send me? I need the work but I don't want to lose clients by going back and saying hey this is more work than I expected so pay me more?
I'm quite new to it so how do I handle it? The demand is there but I'm finding the demand for exact quotes to be very hard to provide.