Eh, I don't concern myself with that. I collect them because I like them, not because I think they are going to be worth anything. I just don't go overboard with it. I pick the characters or lines I want to collect and stick with that. I don't get wrapped up in exclusives, chases, etc. because one day the market will fall out with these. If something I want is an exclusive and I can get it, great. If not, then I don't worry about it and move on.
People are just getting caught up in the hype. Everyone is collecting these, so people want to be a part of that. Funko also feeds the obsession by releasing ultra limited pieces or EX items in limited quantities outside of a Con. I don't even want to know what NYCC will be like.