General Press kit Question

[bazzaffc]

Hi all I'm fairly new to collecting bits just started off with the odd CE of some games but really do like some of the more unusual stuff that gets released.

I see a lot of press kits on here like the new bioshock one for example but how do you guys get hold of them in the first place?

Is it just a case of waiting for them to go on eBay or do you just have to be lucky and no someone that gets given one in the first place??