Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is what I call a rip off

I too thought when I bought this for my son it would be something he would love. Dragonball Z is his favorite show. I was shocked when he opened the box and saw that it was mosty cardboard. When you look on the box it looks so cool. Do not get fooled. The sides of the stadium do not stay together. I hope that I can return it eventhough it has been opened.