I called a broker once and asked for the price of the plane. His response "Well, how much would you give me for it?" Game on and I wasn't playing, my time is worth more to me than that...
Do what I do on a job interview, "How much money do you want?" "Me? I want $10,000,000 a year plus full benefits and a company jet. The question really is 'What are you offering?'"
Always put the ball in their court, it's simple enough.