The price of the kids costumes depends upon the material that is used to make the costume. The most commonly used material is cotton as it allows a good amount of comfort. Some shops may charge some extra amount as they say that the cotton used in making the costume is of high quality. Some stores have costumes made up of blended fabrics. Though the price is cheaper but you will have to compensate upon the quality. Certain heavy stuff is used to make the Easter bunny costumes but it has cotton pads in them. This protect them form any kind of injury as it is always inevitable.