This is a tactic some can use and others are afraid to try.
In my opinion.... you still have to bid YOUR price and not back your numbers into theirs. That's what appears very questionable to most.
However, like you said Gypsy.... you'd like to know their range, so you don't design a $20,000 sign when they have the budget for $2,500. You don't want to spin your wheels unnecessarily.
Over the years, you can spot the people that don't have a clue and then there are others that are very willing to work with you if you strike up the right approach.... that's the tough one.... who can you really do business with today ??
I've already said to customers.... well, I was a little higher than that, but we'll see what we can do for you. Then on the other hand.... had people that were higher than I expected and I might've bumped my price up a little, but no where near what they said. It all works out in the wash if you're fair and honest.