After a couple of similar experiences, I too started to mention compensation up front. While it has saved a lot of time, I'm starting to have second thoughts about this approach. The problem is that you don't get a chance to sell yourself to demonstrate why a higher salary might be warranted.
I tested that, too. But I always ended up wasting too much time. I have a base salary of n. If their initial estimate is under that, then I move on. I only talk to those who can at least pay n. Otherwise, its a waste of time. I adopted this system after I wasted a couple of days interviewing with a technical advisor (this title is now a red flag for me).
