It has to be limited, it has to have a certificate of authenticity, etc.

[Johnny]

Still we have a couple of resellers around the forums.
The most important things were said, you should buy what you like.
But i prefer to pay 100€ on release for a CE that i know it's worth my money (Good contents and rather limited) that to pay 100€ for a CE that 1 month later is half the price.

[thinkforgetfull]

for me, I don't "collect" in the sense of i MUST keep everything mint and sealed, as If I see a collectors/special/limited edition with stuff I like, I will buy it. I mean I have some stuff that I will keep forever unopened, (like my ME:3 N7 edition signed by the voice of liara and ashley) but i play most of my CE's. Im extremely careful with my stuff, (I have been told that my disks look unused) so yeah. I mean, having numbered stuff, or Certificates of authenticity is nice and all, but not part of the collecting "thing" for me.