I always ask straight-forward and bluntly, “How much do you have budgeted for this project?” I then try and find a solution that will fit. I do fixed-bid contract work. Never bill by time. As said earlier in a post “time” doesn’t reflect the projects true market value.
If the client is asking for the impossible, I show them how being creative and taking another approach will solve their problem. Just because the client thinks they need a brochure or logo doesn’t mean that will necessarily solve the real problem. Get back to goals and objectives first.
What you’re worth is in the mind of the client. Not what you think. Get into their head. They might have a higher opinion of your value than you do.