I understand that. We are going through the very same thing right now with my wife's uncle. They invited us over 2 weeks ago to rifle through all his stuff and pick what we wanted to buy. I bought many things from him. Last night my wife's cousin came over and gave us tons of stuff. Everything from propane heaters to molds to grilling stuff. They are about to have an estate sale and wanted what they considered his important things to go to family and friends that would really use and take care of his belongings. If they knew how much those molds meant to you, they would probably very happy knowing you got them. Just a thought to ponder on. I do realize there's a difference in our situations. I had never met my wife's uncle, but he knew I loved grilling, fishing, and guns. They did contact us.
But someone else will ask the for those molds sooner or later.