If you're looking to purchase them after the fact, couldn't you just make an US account and buy it through the US store? I remember when the RE5 demo was out, I made a Japan account to download it early.
In the event that you pre-ordered... you have my sympathy.
The USA players were lucky to even get them this early. Chill dude!
Preorder bonuses usually come MUCH later for most games. I'd go so far as to even say that 99% of games' preorder bonuses don't arrive to the public until AT VERY LEAST a little bit less than a year post-game-release.
You should have preordered the game.
And please. Don't whine about this. You're probably getting the costumes soon; USA did.
Be thankful that SuperBot is kind enough to spread the preorder bonus to people this early.
You've also been given chances with multi-redemption-codes. (multiple ones have been sent out. - Maybe it was only USA, so correct me if I'm wrong.)
Don't act so entitled.
I'm not an EU player, but it seems like the localization between the US and EU versions shouldn't be so overly complex that we should have gotten the content so much earlier. Plus they've even updated the store for individual purchase of costumes, so I for one can empathize with the plight of the Europeans.
Also, Greece. You guys have them to deal with. The least the world could've done is release those costumes in a timely manner.