I have no answer to your questions, but I'll add this, which I read 10 years ago in a column by Henry Rinkler (I think that is the name), the collectible writer, who said there were four questions that every collector hated to hear, especially from his wife:
(1) how much did that cost?
(2) why did you buy it?
(3) where are we going to put it?
(4) how am I going to get rid of it after you die?

Robt.