Two things, firstly they have a spin off show "modern collectables"
....I didn't know this. I don't think it is on any of the 4 tv channels I get. I wish it was, I would like to see what it is about.
I offten wonder, when I watch this show, about the experts. Like you were saying about the calculator, I bet there is a bunch of stuff that the experts think is worthless when it really isn't. Of course it works the other way too sometimes, where they say an item is worth 5 times what it really is.