I suggest you check out an online auction house. They will probably get you more money selling individual items that you will as 1 big lot. I've bought many items from https://www.liveauctioneers.com/ and they get pretty good money for the items.
I do the same thing you are doing for the astronomy hobby. Fortunately, that hobby has some dedicated sites to sell items that only act as the advertising platform and do not get involved in the transaction. It allows for deal making. What you are doing is very valuable. I find the biggest value is to make the items go away to help the healing process begin. I usually bring everything to my place where I test every item, list it, ship it, and pay the estate. The money is often secondary.
In this hobby when I'm in the shopping mood I check out the auction houses. I'm currently watching this item: https://www.liveauctioneers.com/item/233325526_hickok-tube-tester-bangor-pa It will go for way more than my budget so I'm willing to share it with the world.