I would say every coin has 2 sides. Jack can feel honored a person values his opinion enough to ask for his evaluation of a collection he has worked years to acquire. But at least be reasonable on what you can expect. If he is a good friend, and is asking as a friend, that is one thing. If he is asking Jack because he is a known expert in the field, try asking your Doctor, Lawyer, or Accountant for free information and see how far you get! I would also agree it would have been quicker and less trouble to have simply responded with a show of interest to buy or not on Jack's part. And offer Evaluations of Estates on an $$$ Hourly basis.