Nevermind the complete PS2 collection, what about some of the other stuff in his collection?

When you have a collection as vast as yours, there are probably dozens of items in your collection that would qualify high in anyone’s “favorite items” list. So now I wonder which ones you pick out of all those amazing items.
Well actually picking a top 5 is not that hard for me:
1. Uncharted Fortune Hunter Editions [Playstation 3] (of which I have two copies)
2. Elemental Gearbolt Assassin’s case [Playstation 1]
3. Last Hope [Neo Geo AES]
4. Magical Chase [Turbo Grafix]
5. Minestorm 2 Cart [Vectrex]
How much are those worth now? They're all pretty rare, each one is basically considered a grail. How someone can get all this stuff so quickly just boggles the mind.