Yeah, I do certainly think that a piece from Carbide is going to be more in demand than from almost any other robot really. And it's true that recognisable external components will value higher than unseen internal components. There were internal parts from Ironside3 being sold on eBay fairly cheaply by Louise from their team.

What you say about the charity auction could well be true. I have no intention to ever spend more than 100 pounds for what is, essentially, a piece of junk from a TV show - and a TV show that many people perceive to be for children. Of course it's for all ages but that's how it's perceived by many, and at the filming/live events it can be uncomfortable being surrounded by so many kids, you do get a little bit paranoid that people are going to think you are a paedophile. But that's just me being super paranoid, I know, but why do so many think of RW as being something for kids yet would not say the same about most sports? It is essentially a sport involving machines.

Whoever bought that piece of Carbide for 300+ pounds was ripped off.