One of my favorite characters on TV is Mark Hall-Patton. He frequently appears as a guest expert appraiser on Pawn Stars, and like me, he's a Delaware Blue Hen.
He is unique among the experts on that show in that he only vouches for authenticity of an object and never assigns a dollar value to it.
I suggest we begin the same policy here. Confirm authenticity, yes, refer people to eB*y or other resources, yes, but do not speak a dollar value on the forums. For discussions of items for sale, purchase or trade in the Classified section, restrict discussion of price and dollar amounts to private messages.
I think the benefit of doing so would be to eliminate the phenomenon of people trying to wangle expert advice on prices and salability out of the hobbyists and experts here, and keep the discussion of signal collecting, observing, and restoration as pure as possible.
Just my two -- er, suggestion. Hope it finds favor.