Yea, I've found a lot of that stuff myself already. I've been tempted at some of those promo discs, but there is not much difference between them and the actual retail one... and I am low on funds myself so I need to pick out the most unique items for my collection lately.
The folder I have too...
And the japanese version is something I /really/ want to get at some point, but i keep putting it at the lower part of my priorities list because it is a general release in Japan, and finding a copy of it at any time later will be a lot easier than say, some limited thing, or a t-shirt or something. I really want it though... the japan version of inFamous 1 was so colorful and awesome. ;-;