Do you want to sell your home?

I'm not sure what the point of the "do you want to sell your home for the right price" calls are to be honest. I periodically will answer unknown calls and the first thing I ask is what are you offering? After dozens of these calls I have not heard a single dollar number given. What are they expecting people to say? Why not have at least a range to start with? Why do they call? How do they make money? I mean, sure, for the right price I would move and quickly even: