There are some clients that come to the table, and their expectations are just unrealistic. It is your job as an expert to help them understand what they can expect the market to produce. An example would be a seller thinking they can get $200,000 out of a house where the comparable analysis only allows for $150,000. Or a buyer who thinks they can get a house that is worth $300,000 for only $200,000.
Now don’t get me wrong, these situations are possible, just not likely.
So if it were me, I would present the evidence to the client, and judge their reaction. If they are unwilling to budge and demand to hold their ground, you might just recommend another agent to them and let them go. If not, you may just be allowing yourself to waste their time, and yours.
You have to make judgments with people on their willingness to work with you. If they are willing to adjust their approach or expectations regardless of the evidence you present them, they will likely become a problem for you. And if something were to go wrong with the deal, they might end up suing you.
So if I had any advice for you today, I would simply say, don’t work with anyone who comes in the door. Qualify them a bit first, and make sure you are comfortable with investing your time in them. I think you’ll find in the long run, that you are much better off.