I went to a regional Yugioh tournament and they wouldn't let me play these decks. They said they were fakes. I was extremely disappointed.
Maybe good for non-professional play at home or with friends. They are good quality fakes, and it's hard to tell if they're real or not. I gave them to my son, who absolutely loves them, but they are certainly counterfeit. There is no doubt.
They arrived in brand new condition, all cards sealed in plastic, and were accounted for.