If it is very limited then why the hell don't Zavvi say it's like only 500 or a 1000!
How the hell is anybody to know, I was lucky I bagged a Gladiator steelbook but only because I set an alarm on my phone for quarter to midday on the appropriate day and went straight onto the website when it was already live!
My only assumption is to stop somebody hoovering up a s***load of steels because when have Zavvi ever given a gnat"s arse about that!!!