Gamestop
Amazon
Steam
There's more of course, so if you prefer another online retailer, just hit up Google.
EDIT: Sorry, just realized you were talking about a Booster, and not necessarily the Complete Collection game itself (maybe I should have my coffee before posting after I get up, lol). As far as I know, the perk pack with the costume pieces and such is only available directly from the NC Store.
Hey guys,i'm having some problems acquiring the GR Complete Collection Booster Pack from the US NC Store,so I was thinking if I would be able to find it on any other retail site.I'm having some difficulty into finding it somewhere else.Can anyone give me a hand?