Do you know someone who......

As a stamp collector, I often get asked if I know someone who could estimate the value of a collection.  This is usually asked by someone who has inherited someone's collection.  When asked this question, what is your first response?  Do you ask the individual a little bit about the collection so you have a better idea of how to respond?  Perhaps the first question we ask should be, "Have you ever thought of being a collector yourself?"  I realize that this is a long shot, because the individuals just want to sell the items and be done with it.  I think this is an ideal opportunity to enthusiastically talk about the hobby with someone.  A personal invitation to attend a club meeting could mean the difference between that person becoming a collector at some point or not.  So, why not go for broke?  What have you got to lose?