Pustefix than 1 liter bottle is to get the normal trade hardly. Justification: It would be too expensive. Nonsense. All the counterfeit products (about 1/3 cheaper) only work halfway convincing, even with the small normal breath rings or tubes (bubbles burst too quickly. There are, for example, the medium and large rings, with which you can make giant soap bubbles, which also long fly, look beautiful and burst not the same. This only works with Pustefix. I've pretty much tried all the counterfeit products and afterwards annoyed by the useless teller.